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simons |
/* $Id: head.S,v 1.1.1.1 2001-09-10 07:44:02 simons Exp $
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* head.S: The initial boot code for the Sparc port of Linux.
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1995 Peter Zaitcev (Zaitcev@ipmce.su)
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*/
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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#include
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.data
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/*
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* The following are used with the prom_vector node-ops to figure out
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* the cpu-type
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*/
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.align 4
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.globl C_LABEL(cputyp)
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C_LABEL(cputyp):
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.word 1
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.align 4
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.globl C_LABEL(cputypval)
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C_LABEL(cputypval):
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.asciz "sun4c"
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.ascii " "
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C_LABEL(cputypvalend):
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C_LABEL(cputypvallen) = C_LABEL(cputypvar) - C_LABEL(cputypval)
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.align 4
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/*
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* Sun people can't spell worth damn. "compatability" indeed.
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* At least we *know* we can't spell, and use a spell-checker.
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*/
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/* Uh, actually Linus it is I who cannot spell. Too much murky
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* Sparc assembly will do this to ya.
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*/
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C_LABEL(cputypvar):
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.asciz "compatability"
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/* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */
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.align 4
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C_LABEL(cputypvar_sun4m):
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.asciz "compatible"
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.align 4
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sun4_notsup:
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.asciz "Sparc-Linux sun4 support not implemented yet\n\n"
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.align 4
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sun4d_notsup:
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.asciz "Sparc-Linux sun4d support does not exist\n\n"
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.align 4
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sun4e_notsup:
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.asciz "Sparc-Linux sun4e support does not exist\n\n"
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.align 4
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sun4u_notsup:
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.asciz "Sparc-Linux sun4u support does not exist\n\n"
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.align 4
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/* The Sparc trap table, bootloader gives us control at _start. */
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.text
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.globl start, _stext, _start, __stext
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.globl C_LABEL(trapbase)
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_start: /* danger danger */
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__stext:
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_stext:
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start:
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C_LABEL(trapbase):
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#ifdef __SMP__
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C_LABEL(trapbase_cpu0):
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#endif
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/* We get control passed to us here at t_zero. */
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t_zero: b gokernel; nop; nop; nop;
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t_tflt: SPARC_TFAULT /* Inst. Access Exception */
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t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */
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t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */
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t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */
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t_wovf: WINDOW_SPILL /* Window Overflow */
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t_wunf: WINDOW_FILL /* Window Underflow */
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t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */
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t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */
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t_dflt: SPARC_DFAULT /* Data Miss Exception */
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t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */
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t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */
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t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
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t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */
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t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */
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t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */
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t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */
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t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */
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t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */
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t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */
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t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */
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t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */
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t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */
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t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */
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t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */
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t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */
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t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */
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#ifndef __SMP__
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t_nmi: NMI_TRAP /* Level 15 (NMI) */
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#else
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TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
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#endif
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t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */
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t_iacce:BAD_TRAP(0x21) /* Instr Access Error */
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t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23)
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t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */
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t_uflsh:TRAP_ENTRY(0x25, do_bad_flush) /* Unimplemented FLUSH inst. */
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t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
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t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */
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t_dacce:SPARC_DFAULT /* Data Access Error */
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t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */
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t_dserr:BAD_TRAP(0x2b) /* Data Store Error */
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t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */
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t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
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t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
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t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
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t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */
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t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
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t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
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t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
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t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
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t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
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t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
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t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
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t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
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t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
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t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
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t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
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t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
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t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
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t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f)
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t_sunos:SUNOS_SYSCALL_TRAP /* SunOS System Call */
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t_sbkpt:BAD_TRAP(0x81) /* Software Breakpoint/KGDB */
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t_divz: BAD_TRAP(0x82) /* Divide by zero trap */
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t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */
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t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */
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t_rchk: BAD_TRAP(0x85) /* Range Check */
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t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */
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t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */
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t_slowl:SOLARIS_SYSCALL_TRAP /* Slowaris System Call */
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t_netbs:NETBSD_SYSCALL_TRAP /* Net-B.S. System Call */
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t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e)
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t_bad8f:BAD_TRAP(0x8f)
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t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */
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t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95)
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t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a)
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t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f)
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t_getcc:GETCC_TRAP /* Get Condition Codes */
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t_setcc:SETCC_TRAP /* Set Condition Codes */
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t_bada2:BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
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t_bada7:BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
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t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
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t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
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t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
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t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
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t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
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t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
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t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
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t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
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t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
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t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
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t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
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t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
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t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
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t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
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t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
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t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
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t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd)
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dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */
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dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */
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.globl C_LABEL(end_traptable)
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C_LABEL(end_traptable):
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#ifdef __SMP__
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/* Trap tables for the other cpus. */
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.globl C_LABEL(trapbase_cpu1), C_LABEL(trapbase_cpu2), C_LABEL(trapbase_cpu3)
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C_LABEL(trapbase_cpu1):
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BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
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TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
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WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
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TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
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TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
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BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
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TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
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TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
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TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
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TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
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TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
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TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
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TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
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TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
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TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
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BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
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BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
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SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
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BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
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|
|
BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
|
| 216 |
|
|
BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
|
| 217 |
|
|
BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
|
| 218 |
|
|
BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
|
| 219 |
|
|
BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
|
| 220 |
|
|
BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
|
| 221 |
|
|
BAD_TRAP(0x50)
|
| 222 |
|
|
BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
|
| 223 |
|
|
BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
|
| 224 |
|
|
BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
|
| 225 |
|
|
BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
|
| 226 |
|
|
BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
|
| 227 |
|
|
BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
|
| 228 |
|
|
BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
|
| 229 |
|
|
BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
|
| 230 |
|
|
BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
|
| 231 |
|
|
BAD_TRAP(0x7e) BAD_TRAP(0x7f)
|
| 232 |
|
|
SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
|
| 233 |
|
|
TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
|
| 234 |
|
|
BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
|
| 235 |
|
|
NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
|
| 236 |
|
|
BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
|
| 237 |
|
|
LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
|
| 238 |
|
|
BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
|
| 239 |
|
|
BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
|
| 240 |
|
|
BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
|
| 241 |
|
|
BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
|
| 242 |
|
|
BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
|
| 243 |
|
|
BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
|
| 244 |
|
|
BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
|
| 245 |
|
|
BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
|
| 246 |
|
|
BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
|
| 247 |
|
|
BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
|
| 248 |
|
|
BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
|
| 249 |
|
|
BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
|
| 250 |
|
|
BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
|
| 251 |
|
|
BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
|
| 252 |
|
|
BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
|
| 253 |
|
|
BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
|
| 254 |
|
|
BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
|
| 255 |
|
|
BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
|
| 256 |
|
|
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
|
| 257 |
|
|
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
|
| 258 |
|
|
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
|
| 259 |
|
|
BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
|
| 260 |
|
|
|
| 261 |
|
|
C_LABEL(trapbase_cpu2):
|
| 262 |
|
|
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
|
| 263 |
|
|
TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
|
| 264 |
|
|
WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
|
| 265 |
|
|
TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
|
| 266 |
|
|
TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
|
| 267 |
|
|
BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
|
| 268 |
|
|
TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
|
| 269 |
|
|
TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
|
| 270 |
|
|
TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
|
| 271 |
|
|
TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
|
| 272 |
|
|
TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
|
| 273 |
|
|
TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
|
| 274 |
|
|
TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
|
| 275 |
|
|
TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
|
| 276 |
|
|
TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
|
| 277 |
|
|
BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
|
| 278 |
|
|
BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
|
| 279 |
|
|
SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
|
| 280 |
|
|
BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
|
| 281 |
|
|
BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
|
| 282 |
|
|
BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
|
| 283 |
|
|
BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
|
| 284 |
|
|
BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
|
| 285 |
|
|
BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
|
| 286 |
|
|
BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
|
| 287 |
|
|
BAD_TRAP(0x50)
|
| 288 |
|
|
BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
|
| 289 |
|
|
BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
|
| 290 |
|
|
BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
|
| 291 |
|
|
BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
|
| 292 |
|
|
BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
|
| 293 |
|
|
BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
|
| 294 |
|
|
BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
|
| 295 |
|
|
BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
|
| 296 |
|
|
BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
|
| 297 |
|
|
BAD_TRAP(0x7e) BAD_TRAP(0x7f)
|
| 298 |
|
|
SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
|
| 299 |
|
|
TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
|
| 300 |
|
|
BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
|
| 301 |
|
|
NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
|
| 302 |
|
|
BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
|
| 303 |
|
|
LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
|
| 304 |
|
|
BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
|
| 305 |
|
|
BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
|
| 306 |
|
|
BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
|
| 307 |
|
|
BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
|
| 308 |
|
|
BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
|
| 309 |
|
|
BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
|
| 310 |
|
|
BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
|
| 311 |
|
|
BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
|
| 312 |
|
|
BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
|
| 313 |
|
|
BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
|
| 314 |
|
|
BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
|
| 315 |
|
|
BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
|
| 316 |
|
|
BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
|
| 317 |
|
|
BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
|
| 318 |
|
|
BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
|
| 319 |
|
|
BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
|
| 320 |
|
|
BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
|
| 321 |
|
|
BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
|
| 322 |
|
|
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
|
| 323 |
|
|
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
|
| 324 |
|
|
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
|
| 325 |
|
|
BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
|
| 326 |
|
|
|
| 327 |
|
|
C_LABEL(trapbase_cpu3):
|
| 328 |
|
|
BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
|
| 329 |
|
|
TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
|
| 330 |
|
|
WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
|
| 331 |
|
|
TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
|
| 332 |
|
|
TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
|
| 333 |
|
|
BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
|
| 334 |
|
|
TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
|
| 335 |
|
|
TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
|
| 336 |
|
|
TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
|
| 337 |
|
|
TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
|
| 338 |
|
|
TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
|
| 339 |
|
|
TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
|
| 340 |
|
|
TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
|
| 341 |
|
|
TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
|
| 342 |
|
|
TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
|
| 343 |
|
|
BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
|
| 344 |
|
|
BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
|
| 345 |
|
|
SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
|
| 346 |
|
|
BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
|
| 347 |
|
|
BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
|
| 348 |
|
|
BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
|
| 349 |
|
|
BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
|
| 350 |
|
|
BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
|
| 351 |
|
|
BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
|
| 352 |
|
|
BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
|
| 353 |
|
|
BAD_TRAP(0x50)
|
| 354 |
|
|
BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
|
| 355 |
|
|
BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
|
| 356 |
|
|
BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
|
| 357 |
|
|
BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
|
| 358 |
|
|
BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
|
| 359 |
|
|
BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
|
| 360 |
|
|
BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
|
| 361 |
|
|
BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
|
| 362 |
|
|
BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
|
| 363 |
|
|
BAD_TRAP(0x7e) BAD_TRAP(0x7f)
|
| 364 |
|
|
SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
|
| 365 |
|
|
TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
|
| 366 |
|
|
BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
|
| 367 |
|
|
NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
|
| 368 |
|
|
BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
|
| 369 |
|
|
LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
|
| 370 |
|
|
BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
|
| 371 |
|
|
BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
|
| 372 |
|
|
BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
|
| 373 |
|
|
BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
|
| 374 |
|
|
BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
|
| 375 |
|
|
BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
|
| 376 |
|
|
BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
|
| 377 |
|
|
BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
|
| 378 |
|
|
BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
|
| 379 |
|
|
BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
|
| 380 |
|
|
BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
|
| 381 |
|
|
BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
|
| 382 |
|
|
BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
|
| 383 |
|
|
BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
|
| 384 |
|
|
BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
|
| 385 |
|
|
BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
|
| 386 |
|
|
BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
|
| 387 |
|
|
BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
|
| 388 |
|
|
BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
|
| 389 |
|
|
BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
|
| 390 |
|
|
BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
|
| 391 |
|
|
BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
|
| 392 |
|
|
|
| 393 |
|
|
.globl C_LABEL(cpu0_stack), C_LABEL(cpu1_stack), C_LABEL(cpu2_stack)
|
| 394 |
|
|
.globl C_LABEL(cpu3_stack)
|
| 395 |
|
|
C_LABEL(cpu0_stack): .skip 0x2000
|
| 396 |
|
|
C_LABEL(cpu1_stack): .skip 0x2000
|
| 397 |
|
|
C_LABEL(cpu2_stack): .skip 0x2000
|
| 398 |
|
|
C_LABEL(cpu3_stack): .skip 0x2000
|
| 399 |
|
|
#endif
|
| 400 |
|
|
.skip 4096
|
| 401 |
|
|
|
| 402 |
|
|
/* This was the only reasonable way I could think of to properly align
|
| 403 |
|
|
* these page-table data structures.
|
| 404 |
|
|
*/
|
| 405 |
|
|
.globl C_LABEL(bootup_user_stack)
|
| 406 |
|
|
.globl C_LABEL(bootup_kernel_stack)
|
| 407 |
|
|
.globl C_LABEL(pg0)
|
| 408 |
|
|
.globl C_LABEL(empty_bad_page)
|
| 409 |
|
|
.globl C_LABEL(empty_bad_page_table)
|
| 410 |
|
|
.globl C_LABEL(empty_zero_page)
|
| 411 |
|
|
.globl C_LABEL(swapper_pg_dir)
|
| 412 |
|
|
C_LABEL(bootup_user_stack): .skip 0x2000
|
| 413 |
|
|
C_LABEL(bootup_kernel_stack): .skip 0x2000
|
| 414 |
|
|
C_LABEL(swapper_pg_dir): .skip 0x1000
|
| 415 |
|
|
C_LABEL(pg0): .skip 0x1000
|
| 416 |
|
|
C_LABEL(empty_bad_page): .skip 0x1000
|
| 417 |
|
|
C_LABEL(empty_bad_page_table): .skip 0x1000
|
| 418 |
|
|
C_LABEL(empty_zero_page): .skip 0x1000
|
| 419 |
|
|
|
| 420 |
|
|
|
| 421 |
|
|
/* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in
|
| 422 |
|
|
* %g7 and at prom_vector_p. And also quickly check whether we are on
|
| 423 |
|
|
* a v0, v2, or v3 prom.
|
| 424 |
|
|
*/
|
| 425 |
|
|
gokernel:
|
| 426 |
|
|
/* Ok, it's nice to know, as early as possible, if we
|
| 427 |
|
|
* are already mapped where we expect to be in virtual
|
| 428 |
|
|
* memory. The Solaris /boot elf format bootloader
|
| 429 |
|
|
* will peek into our elf header and load us where
|
| 430 |
|
|
* we want to be, otherwise we have to re-map.
|
| 431 |
|
|
*
|
| 432 |
|
|
* Some boot loaders don't place the jmp'rs address
|
| 433 |
|
|
* in %o7, so we do a pc-relative call to a local
|
| 434 |
|
|
* label, then see what %o7 has.
|
| 435 |
|
|
*/
|
| 436 |
|
|
|
| 437 |
|
|
mov %o7, %g4 ! Save %o7
|
| 438 |
|
|
|
| 439 |
|
|
/* Jump to it, and pray... */
|
| 440 |
|
|
current_pc:
|
| 441 |
|
|
call 1f
|
| 442 |
|
|
nop
|
| 443 |
|
|
|
| 444 |
|
|
1:
|
| 445 |
|
|
mov %o7, %g3
|
| 446 |
|
|
|
| 447 |
|
|
got_pc:
|
| 448 |
|
|
mov %g4, %o7 /* Previous %o7. */
|
| 449 |
|
|
|
| 450 |
|
|
mov %o0, %l0 ! stash away romvec
|
| 451 |
|
|
mov %o0, %g7 ! put it here too
|
| 452 |
|
|
mov %o1, %l1 ! stash away debug_vec too
|
| 453 |
|
|
|
| 454 |
|
|
/* Ok, let's check out our run time program counter. */
|
| 455 |
|
|
set current_pc, %g5
|
| 456 |
|
|
cmp %g3, %g5
|
| 457 |
|
|
be already_mapped
|
| 458 |
|
|
nop
|
| 459 |
|
|
|
| 460 |
|
|
/* %l6 will hold the offset we have to subtract
|
| 461 |
|
|
* from absolute symbols in order to access areas
|
| 462 |
|
|
* in our own image. If already mapped this is
|
| 463 |
|
|
* just plain zero, else it is PAGE_OFFSET which is
|
| 464 |
|
|
* also KERNBASE.
|
| 465 |
|
|
*/
|
| 466 |
|
|
set PAGE_OFFSET, %l6
|
| 467 |
|
|
b copy_prom_lvl14
|
| 468 |
|
|
nop
|
| 469 |
|
|
|
| 470 |
|
|
already_mapped:
|
| 471 |
|
|
mov 0, %l6
|
| 472 |
|
|
|
| 473 |
|
|
/* Copy over the Prom's level 14 clock handler. */
|
| 474 |
|
|
copy_prom_lvl14:
|
| 475 |
|
|
#if 1
|
| 476 |
|
|
/* DJHR
|
| 477 |
|
|
* preserve our linked/calculated instructions
|
| 478 |
|
|
*/
|
| 479 |
|
|
set C_LABEL(lvl14_save), %g1
|
| 480 |
|
|
set t_irq14, %g3
|
| 481 |
|
|
sub %g1, %l6, %g1 ! translate to physical
|
| 482 |
|
|
sub %g3, %l6, %g3 ! translate to physical
|
| 483 |
|
|
ldd [%g3], %g4
|
| 484 |
|
|
std %g4, [%g1]
|
| 485 |
|
|
ldd [%g3+8], %g4
|
| 486 |
|
|
std %g4, [%g1+8]
|
| 487 |
|
|
#endif
|
| 488 |
|
|
rd %tbr, %g1
|
| 489 |
|
|
andn %g1, 0xfff, %g1 ! proms trap table base
|
| 490 |
|
|
or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr
|
| 491 |
|
|
or %g1, %g2, %g2
|
| 492 |
|
|
set t_irq14, %g3
|
| 493 |
|
|
sub %g3, %l6, %g3
|
| 494 |
|
|
ldd [%g2], %g4
|
| 495 |
|
|
std %g4, [%g3]
|
| 496 |
|
|
ldd [%g2 + 0x8], %g4
|
| 497 |
|
|
std %g4, [%g3 + 0x8] ! Copy proms handler
|
| 498 |
|
|
|
| 499 |
|
|
/* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT
|
| 500 |
|
|
* MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these
|
| 501 |
|
|
* remapping routines, we need their values afterwards!
|
| 502 |
|
|
*/
|
| 503 |
|
|
/* Now check whether we are already mapped, if we
|
| 504 |
|
|
* are we can skip all this garbage coming up.
|
| 505 |
|
|
*/
|
| 506 |
|
|
copy_prom_done:
|
| 507 |
|
|
cmp %l6, 0
|
| 508 |
|
|
be go_to_highmem ! this will be a nop then
|
| 509 |
|
|
nop
|
| 510 |
|
|
|
| 511 |
|
|
set LOAD_ADDR, %g6
|
| 512 |
|
|
cmp %g7, %g6
|
| 513 |
|
|
bne remap_not_a_sun4 ! This is not a Sun4
|
| 514 |
|
|
nop
|
| 515 |
|
|
|
| 516 |
|
|
or %g0, 0x1, %g1
|
| 517 |
|
|
lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4.
|
| 518 |
|
|
subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400???
|
| 519 |
|
|
be sun4_mutant_remap ! Ugh, it is...
|
| 520 |
|
|
nop
|
| 521 |
|
|
|
| 522 |
|
|
remap_not_a_sun4:
|
| 523 |
|
|
lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c
|
| 524 |
|
|
and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-)
|
| 525 |
|
|
cmp %g1, 0x0
|
| 526 |
|
|
be sun4c_remap ! A sun4c MMU or normal Sun4
|
| 527 |
|
|
nop
|
| 528 |
|
|
srmmu_remap:
|
| 529 |
|
|
/* First, check for a viking (TI) module. */
|
| 530 |
|
|
set 0x40000000, %g2
|
| 531 |
|
|
rd %psr, %g3
|
| 532 |
|
|
and %g2, %g3, %g3
|
| 533 |
|
|
subcc %g3, 0x0, %g0
|
| 534 |
|
|
bz srmmu_nviking
|
| 535 |
|
|
nop
|
| 536 |
|
|
|
| 537 |
|
|
/* Figure out what kind of viking we are on.
|
| 538 |
|
|
* We need to know if we have to play with the
|
| 539 |
|
|
* AC bit and disable traps or not.
|
| 540 |
|
|
*/
|
| 541 |
|
|
|
| 542 |
|
|
/* I've only seen MicroSparc's on SparcClassics with this
|
| 543 |
|
|
* bit set.
|
| 544 |
|
|
*/
|
| 545 |
|
|
set 0x800, %g2
|
| 546 |
|
|
lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg
|
| 547 |
|
|
and %g2, %g3, %g3
|
| 548 |
|
|
subcc %g3, 0x0, %g0
|
| 549 |
|
|
bnz srmmu_nviking ! is in mbus mode
|
| 550 |
|
|
nop
|
| 551 |
|
|
|
| 552 |
|
|
rd %psr, %g3 ! DO NOT TOUCH %g3
|
| 553 |
|
|
andn %g3, PSR_ET, %g2
|
| 554 |
|
|
wr %g2, 0x0, %psr
|
| 555 |
|
|
WRITE_PAUSE
|
| 556 |
|
|
|
| 557 |
|
|
/* Get context table pointer, then convert to
|
| 558 |
|
|
* a physical address, which is 36 bits.
|
| 559 |
|
|
*/
|
| 560 |
|
|
set AC_M_CTPR, %g4
|
| 561 |
|
|
lda [%g4] ASI_M_MMUREGS, %g4
|
| 562 |
|
|
sll %g4, 0x4, %g4 ! We use this below
|
| 563 |
|
|
! DO NOT TOUCH %g4
|
| 564 |
|
|
|
| 565 |
|
|
/* Set the AC bit in the Viking's MMU control reg. */
|
| 566 |
|
|
lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5
|
| 567 |
|
|
set 0x8000, %g6 ! AC bit mask
|
| 568 |
|
|
or %g5, %g6, %g6 ! Or it in...
|
| 569 |
|
|
sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes...
|
| 570 |
|
|
|
| 571 |
|
|
/* Grrr, why does it seem like every other load/store
|
| 572 |
|
|
* on the sun4m is in some ASI space...
|
| 573 |
|
|
* Fine with me, let's get the pointer to the level 1
|
| 574 |
|
|
* page table directory and fetch its entry.
|
| 575 |
|
|
*/
|
| 576 |
|
|
lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr
|
| 577 |
|
|
srl %o1, 0x4, %o1 ! Clear low 4 bits
|
| 578 |
|
|
sll %o1, 0x8, %o1 ! Make physical
|
| 579 |
|
|
|
| 580 |
|
|
/* Ok, pull in the PTD. */
|
| 581 |
|
|
lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd
|
| 582 |
|
|
|
| 583 |
|
|
/* Calculate to KERNBASE entry.
|
| 584 |
|
|
*
|
| 585 |
|
|
* XXX Should not use empirical constant, but Gas gets an XXX
|
| 586 |
|
|
* XXX upset stomach with the bitshift I would have to use XXX
|
| 587 |
|
|
*/
|
| 588 |
|
|
add %o1, 0x3c0, %o3
|
| 589 |
|
|
|
| 590 |
|
|
/* Poke the entry into the calculated address. */
|
| 591 |
|
|
sta %o2, [%o3] ASI_M_BYPASS
|
| 592 |
|
|
|
| 593 |
|
|
/* I don't get it Sun, if you engineered all these
|
| 594 |
|
|
* boot loaders and the PROM (thank you for the debugging
|
| 595 |
|
|
* features btw) why did you not have them load kernel
|
| 596 |
|
|
* images up in high address space, since this is necessary
|
| 597 |
|
|
* for ABI compliance anyways? Does this low-mapping provide
|
| 598 |
|
|
* enhanced interoperability?
|
| 599 |
|
|
*
|
| 600 |
|
|
* "The PROM is the computer."
|
| 601 |
|
|
*/
|
| 602 |
|
|
|
| 603 |
|
|
/* Ok, restore the MMU control register we saved in %g5 */
|
| 604 |
|
|
sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch
|
| 605 |
|
|
|
| 606 |
|
|
/* Turn traps back on. We saved it in %g3 earlier. */
|
| 607 |
|
|
wr %g3, 0x0, %psr ! tick tock, tick tock
|
| 608 |
|
|
|
| 609 |
|
|
/* Now we burn precious CPU cycles due to bad engineering. */
|
| 610 |
|
|
WRITE_PAUSE
|
| 611 |
|
|
|
| 612 |
|
|
/* Wow, all that just to move a 32-bit value from one
|
| 613 |
|
|
* place to another... Jump to high memory.
|
| 614 |
|
|
*/
|
| 615 |
|
|
b go_to_highmem
|
| 616 |
|
|
nop
|
| 617 |
|
|
|
| 618 |
|
|
/* This works on viking's in Mbus mode and all
|
| 619 |
|
|
* other MBUS modules. It is virtually the same as
|
| 620 |
|
|
* the above madness sans turning traps off and flipping
|
| 621 |
|
|
* the AC bit.
|
| 622 |
|
|
*/
|
| 623 |
|
|
srmmu_nviking:
|
| 624 |
|
|
set AC_M_CTPR, %g1
|
| 625 |
|
|
lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr
|
| 626 |
|
|
sll %g1, 0x4, %g1 ! make physical addr
|
| 627 |
|
|
lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table
|
| 628 |
|
|
srl %g1, 0x4, %g1
|
| 629 |
|
|
sll %g1, 0x8, %g1 ! make phys addr for l1 tbl
|
| 630 |
|
|
|
| 631 |
|
|
lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0
|
| 632 |
|
|
add %g1, 0x3c0, %g3 ! XXX AWAY WITH EMPIRICALS
|
| 633 |
|
|
sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry
|
| 634 |
|
|
b go_to_highmem
|
| 635 |
|
|
nop ! wheee....
|
| 636 |
|
|
|
| 637 |
|
|
/* This remaps the kernel on Sun4/4xx machines
|
| 638 |
|
|
* that have the Sun Mutant Three Level MMU.
|
| 639 |
|
|
* It's like a platypus, Sun didn't have the
|
| 640 |
|
|
* SRMMU in conception so they kludged the three
|
| 641 |
|
|
* level logic in the regular Sun4 MMU probably.
|
| 642 |
|
|
*
|
| 643 |
|
|
* Basically, you take each entry in the top level
|
| 644 |
|
|
* directory that maps the low 3MB starting at
|
| 645 |
|
|
* address zero and put the mapping in the KERNBASE
|
| 646 |
|
|
* slots. These top level pgd's are called regmaps.
|
| 647 |
|
|
*/
|
| 648 |
|
|
sun4_mutant_remap:
|
| 649 |
|
|
or %g0, %g0, %g3 ! source base
|
| 650 |
|
|
sethi %hi(KERNBASE), %g4 ! destination base
|
| 651 |
|
|
or %g4, %lo(KERNBASE), %g4
|
| 652 |
|
|
sethi %hi(0x300000), %g5
|
| 653 |
|
|
or %g5, %lo(0x300000), %g5 ! upper bound 3MB
|
| 654 |
|
|
or %g0, 0x1, %l6
|
| 655 |
|
|
sll %l6, 24, %l6 ! Regmap mapping size
|
| 656 |
|
|
add %g3, 0x2, %g3 ! Base magic
|
| 657 |
|
|
add %g4, 0x2, %g4 ! Base magic
|
| 658 |
|
|
|
| 659 |
|
|
/* Main remapping loop on Sun4-Mutant-MMU.
|
| 660 |
|
|
* "I am not an animal..." -Famous Mutant Person
|
| 661 |
|
|
*/
|
| 662 |
|
|
sun4_mutant_loop:
|
| 663 |
|
|
lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry
|
| 664 |
|
|
stha %g2, [%g4] ASI_REGMAP ! Store in high entry
|
| 665 |
|
|
add %g4, %l6, %g4 ! Move up high memory ptr
|
| 666 |
|
|
subcc %g3, %g5, %g0 ! Reached our limit?
|
| 667 |
|
|
blu sun4_mutant_loop ! Nope, loop again
|
| 668 |
|
|
add %g3, %l6, %g3 ! delay, Move up low ptr
|
| 669 |
|
|
b go_to_highmem ! Jump to high memory.
|
| 670 |
|
|
nop
|
| 671 |
|
|
|
| 672 |
|
|
/* The following works for normal (ie. non Sun4/400) Sun4 MMU's */
|
| 673 |
|
|
sun4c_remap:
|
| 674 |
|
|
mov 0, %g3 ! source base
|
| 675 |
|
|
set KERNBASE, %g4 ! destination base
|
| 676 |
|
|
set 0x300000, %g5 ! upper bound 3MB
|
| 677 |
|
|
mov 1, %l6
|
| 678 |
|
|
sll %l6, 18, %l6 ! sun4c mmu segmap size
|
| 679 |
|
|
sun4c_remap_loop:
|
| 680 |
|
|
lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg
|
| 681 |
|
|
sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping
|
| 682 |
|
|
add %g3, %l6, %g3 ! Increment source ptr
|
| 683 |
|
|
subcc %g3, %g5, %g0 ! Reached limit?
|
| 684 |
|
|
bl sun4c_remap_loop ! Nope, loop again
|
| 685 |
|
|
add %g4, %l6, %g4 ! delay, Increment dest ptr
|
| 686 |
|
|
|
| 687 |
|
|
/* Now do a non-relative jump so that PC is in high-memory */
|
| 688 |
|
|
go_to_highmem:
|
| 689 |
|
|
set execute_in_high_mem, %g1
|
| 690 |
|
|
jmpl %g1, %g0
|
| 691 |
|
|
nop
|
| 692 |
|
|
|
| 693 |
|
|
/* Acquire boot time privileged register values, this will help debugging.
|
| 694 |
|
|
* I figure out and store nwindows and nwindowsm1 later on.
|
| 695 |
|
|
*/
|
| 696 |
|
|
execute_in_high_mem:
|
| 697 |
|
|
#if CONFIG_AP1000
|
| 698 |
|
|
/* we don't have a prom :-( */
|
| 699 |
|
|
b sun4m_init
|
| 700 |
|
|
nop
|
| 701 |
|
|
#endif
|
| 702 |
|
|
mov %l0, %o0 ! put back romvec
|
| 703 |
|
|
mov %l1, %o1 ! and debug_vec
|
| 704 |
|
|
|
| 705 |
|
|
sethi %hi( C_LABEL(prom_vector_p) ), %g1
|
| 706 |
|
|
st %o0, [%g1 + %lo( C_LABEL(prom_vector_p) )]
|
| 707 |
|
|
|
| 708 |
|
|
sethi %hi( C_LABEL(linux_dbvec) ), %g1
|
| 709 |
|
|
st %o1, [%g1 + %lo( C_LABEL(linux_dbvec) )]
|
| 710 |
|
|
|
| 711 |
|
|
ld [%o0 + 0x4], %o3
|
| 712 |
|
|
and %o3, 0x3, %o5 ! get the version
|
| 713 |
|
|
|
| 714 |
|
|
cmp %o3, 0x2 ! a v2 prom?
|
| 715 |
|
|
be found_version
|
| 716 |
|
|
nop
|
| 717 |
|
|
|
| 718 |
|
|
/* paul@sfe.com.au */
|
| 719 |
|
|
cmp %o3, 0x3 ! a v3 prom?
|
| 720 |
|
|
be found_version
|
| 721 |
|
|
nop
|
| 722 |
|
|
|
| 723 |
|
|
/* Old sun4's pass our load address into %o0 instead of the prom
|
| 724 |
|
|
* pointer. On sun4's you have to hard code the romvec pointer into
|
| 725 |
|
|
* your code. Sun probably still does that because they don't even
|
| 726 |
|
|
* trust their own "OpenBoot" specifications.
|
| 727 |
|
|
*/
|
| 728 |
|
|
|
| 729 |
|
|
set LOAD_ADDR, %g6
|
| 730 |
|
|
cmp %o0, %g6 ! an old sun4?
|
| 731 |
|
|
be no_sun4_here
|
| 732 |
|
|
nop
|
| 733 |
|
|
|
| 734 |
|
|
found_version:
|
| 735 |
|
|
|
| 736 |
|
|
/* Get the machine type via the mysterious romvec node operations. */
|
| 737 |
|
|
|
| 738 |
|
|
or %g0, %g7, %l1
|
| 739 |
|
|
add %l1, 0x1c, %l1
|
| 740 |
|
|
ld [%l1], %l0
|
| 741 |
|
|
ld [%l0], %l0
|
| 742 |
|
|
call %l0
|
| 743 |
|
|
or %g0, %g0, %o0 ! next_node(0) = first_node
|
| 744 |
|
|
or %o0, %g0, %g6
|
| 745 |
|
|
|
| 746 |
|
|
sethi %hi( C_LABEL(cputypvar) ), %o1 ! First node has cpu-arch
|
| 747 |
|
|
or %o1, %lo( C_LABEL(cputypvar) ), %o1
|
| 748 |
|
|
sethi %hi( C_LABEL(cputypval) ), %o2 ! information, the string
|
| 749 |
|
|
or %o2, %lo( C_LABEL(cputypval) ), %o2
|
| 750 |
|
|
ld [%l1], %l0 ! 'compatibility' tells
|
| 751 |
|
|
ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where
|
| 752 |
|
|
call %l0 ! x is one of '', 'c', 'm',
|
| 753 |
|
|
nop ! 'd' or 'e'. %o2 holds pointer
|
| 754 |
|
|
! to a buf where above string
|
| 755 |
|
|
! will get stored by the prom.
|
| 756 |
|
|
|
| 757 |
|
|
subcc %o0, %g0, %g0
|
| 758 |
|
|
bpos got_prop ! Got the property
|
| 759 |
|
|
nop
|
| 760 |
|
|
|
| 761 |
|
|
or %g6, %g0, %o0
|
| 762 |
|
|
sethi %hi( C_LABEL(cputypvar_sun4m) ), %o1
|
| 763 |
|
|
or %o1, %lo( C_LABEL(cputypvar_sun4m) ), %o1
|
| 764 |
|
|
sethi %hi( C_LABEL(cputypval) ), %o2
|
| 765 |
|
|
or %o2, %lo( C_LABEL(cputypval) ), %o2
|
| 766 |
|
|
ld [%l1], %l0
|
| 767 |
|
|
ld [%l0 + 0xc], %l0
|
| 768 |
|
|
call %l0
|
| 769 |
|
|
nop
|
| 770 |
|
|
|
| 771 |
|
|
got_prop:
|
| 772 |
|
|
set C_LABEL(cputypval), %o2
|
| 773 |
|
|
ldub [%o2 + 0x4], %l1
|
| 774 |
|
|
|
| 775 |
|
|
cmp %l1, 'c' ! We already know we are not
|
| 776 |
|
|
be 1f ! on a plain sun4 because of
|
| 777 |
|
|
nop ! the check for 0x4000 in %o0
|
| 778 |
|
|
|
| 779 |
|
|
cmp %l1, 'm' ! at start
|
| 780 |
|
|
be 1f
|
| 781 |
|
|
nop
|
| 782 |
|
|
|
| 783 |
|
|
cmp %l1, 'd'
|
| 784 |
|
|
be no_sun4d_here ! God bless the person who
|
| 785 |
|
|
nop ! tried to run this on sun4d.
|
| 786 |
|
|
|
| 787 |
|
|
cmp %l1, 'e'
|
| 788 |
|
|
be no_sun4e_here ! Could be a sun4e.
|
| 789 |
|
|
nop
|
| 790 |
|
|
|
| 791 |
|
|
b no_sun4u_here ! AIEEE, a V9 sun4u...
|
| 792 |
|
|
nop
|
| 793 |
|
|
|
| 794 |
|
|
|
| 795 |
|
|
1:
|
| 796 |
|
|
set C_LABEL(cputypval), %l1
|
| 797 |
|
|
ldub [%l1 + 0x4], %l1
|
| 798 |
|
|
cmp %l1, 'm' ! Test for sun4d, sun4e ?
|
| 799 |
|
|
be sun4m_init
|
| 800 |
|
|
nop
|
| 801 |
|
|
|
| 802 |
|
|
/* Jump into mmu context zero. */
|
| 803 |
|
|
set AC_CONTEXT, %g1
|
| 804 |
|
|
stba %g0, [%g1] ASI_CONTROL
|
| 805 |
|
|
|
| 806 |
|
|
b sun4c_continue_boot
|
| 807 |
|
|
nop
|
| 808 |
|
|
|
| 809 |
|
|
sun4m_init:
|
| 810 |
|
|
|
| 811 |
|
|
/* Ok, the PROM could have done funny things and apple cider could still
|
| 812 |
|
|
* be sitting in the fault status/address registers. Read them all to
|
| 813 |
|
|
* clear them so we don't get magic faults later on.
|
| 814 |
|
|
*/
|
| 815 |
|
|
/* This sucks, apparently this makes Vikings call prom panic, will fix later */
|
| 816 |
|
|
|
| 817 |
|
|
rd %psr, %o1
|
| 818 |
|
|
srl %o1, 28, %o1 ! Get a type of the CPU
|
| 819 |
|
|
|
| 820 |
|
|
subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC
|
| 821 |
|
|
be sun4c_continue_boot
|
| 822 |
|
|
nop
|
| 823 |
|
|
|
| 824 |
|
|
set AC_M_SFSR, %o0
|
| 825 |
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
| 826 |
|
|
set AC_M_SFAR, %o0
|
| 827 |
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
| 828 |
|
|
|
| 829 |
|
|
/* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */
|
| 830 |
|
|
subcc %o1, 0, %g0
|
| 831 |
|
|
be sun4c_continue_boot
|
| 832 |
|
|
nop
|
| 833 |
|
|
|
| 834 |
|
|
set AC_M_AFSR, %o0
|
| 835 |
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
| 836 |
|
|
set AC_M_AFAR, %o0
|
| 837 |
|
|
lda [%o0] ASI_M_MMUREGS, %g0
|
| 838 |
|
|
nop
|
| 839 |
|
|
|
| 840 |
|
|
|
| 841 |
|
|
sun4c_continue_boot:
|
| 842 |
|
|
|
| 843 |
|
|
|
| 844 |
|
|
/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
|
| 845 |
|
|
* show-time!
|
| 846 |
|
|
*/
|
| 847 |
|
|
|
| 848 |
|
|
sethi %hi( C_LABEL(cputyp) ), %o0
|
| 849 |
|
|
st %g4, [%o0 + %lo( C_LABEL(cputyp) )]
|
| 850 |
|
|
|
| 851 |
|
|
/* Turn on Supervisor, EnableFloating, and all the PIL bits.
|
| 852 |
|
|
* Also puts us in register window zero with traps off.
|
| 853 |
|
|
*/
|
| 854 |
|
|
set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2
|
| 855 |
|
|
wr %g2, 0x0, %psr
|
| 856 |
|
|
WRITE_PAUSE
|
| 857 |
|
|
|
| 858 |
|
|
/* I want a kernel stack NOW! */
|
| 859 |
|
|
set C_LABEL(bootup_user_stack), %g1
|
| 860 |
|
|
add %g1, (PAGE_SIZE - REGWIN_SZ), %sp
|
| 861 |
|
|
mov 0, %fp /* And for good luck */
|
| 862 |
|
|
|
| 863 |
|
|
/* Zero out our BSS section. */
|
| 864 |
|
|
set C_LABEL(edata) , %o0 ! First address of BSS
|
| 865 |
|
|
set C_LABEL(end) , %o1 ! Last address of BSS
|
| 866 |
|
|
add %o0, 0x1, %o0
|
| 867 |
|
|
1:
|
| 868 |
|
|
stb %g0, [%o0]
|
| 869 |
|
|
subcc %o0, %o1, %g0
|
| 870 |
|
|
bl 1b
|
| 871 |
|
|
add %o0, 0x1, %o0
|
| 872 |
|
|
|
| 873 |
|
|
/* Initialize the umask value for init_task just in case.
|
| 874 |
|
|
* But first make current_set[0] point to something useful.
|
| 875 |
|
|
*/
|
| 876 |
|
|
set C_LABEL(init_task), %g4
|
| 877 |
|
|
set C_LABEL(current_set), %g2
|
| 878 |
|
|
st %g4, [%g2]
|
| 879 |
|
|
|
| 880 |
|
|
set C_LABEL(bootup_kernel_stack), %g3
|
| 881 |
|
|
st %g3, [%g4 + TASK_KSTACK_PG]
|
| 882 |
|
|
st %g0, [%g4 + THREAD_UMASK]
|
| 883 |
|
|
|
| 884 |
|
|
/* Compute NWINDOWS and stash it away. Now uses %wim trick explained
|
| 885 |
|
|
* in the V8 manual. Ok, this method seems to work, Sparc is cool...
|
| 886 |
|
|
* No, it doesn't work, have to play the save/readCWP/restore trick.
|
| 887 |
|
|
*/
|
| 888 |
|
|
|
| 889 |
|
|
wr %g0, 0x0, %wim ! so we do not get a trap
|
| 890 |
|
|
WRITE_PAUSE
|
| 891 |
|
|
|
| 892 |
|
|
save
|
| 893 |
|
|
|
| 894 |
|
|
rd %psr, %g3
|
| 895 |
|
|
|
| 896 |
|
|
restore
|
| 897 |
|
|
|
| 898 |
|
|
and %g3, 0x1f, %g3
|
| 899 |
|
|
add %g3, 0x1, %g3
|
| 900 |
|
|
|
| 901 |
|
|
mov 2, %g1
|
| 902 |
|
|
wr %g1, 0x0, %wim ! make window 1 invalid
|
| 903 |
|
|
WRITE_PAUSE
|
| 904 |
|
|
|
| 905 |
|
|
cmp %g3, 0x7
|
| 906 |
|
|
bne 2f
|
| 907 |
|
|
nop
|
| 908 |
|
|
|
| 909 |
|
|
/* Adjust our window handling routines to
|
| 910 |
|
|
* do things correctly on 7 window Sparcs.
|
| 911 |
|
|
*/
|
| 912 |
|
|
|
| 913 |
|
|
#define PATCH_INSN(src, dest) \
|
| 914 |
|
|
set src, %g5; \
|
| 915 |
|
|
set dest, %g6; \
|
| 916 |
|
|
ld [%g5], %g4; \
|
| 917 |
|
|
st %g4, [%g6];
|
| 918 |
|
|
|
| 919 |
|
|
/* Patch for window spills... */
|
| 920 |
|
|
PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
|
| 921 |
|
|
PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
|
| 922 |
|
|
PATCH_INSN(spnwin_patch3_7win, spnwin_patch3)
|
| 923 |
|
|
|
| 924 |
|
|
/* Patch for window fills... */
|
| 925 |
|
|
PATCH_INSN(fnwin_patch1_7win, fnwin_patch1)
|
| 926 |
|
|
PATCH_INSN(fnwin_patch2_7win, fnwin_patch2)
|
| 927 |
|
|
|
| 928 |
|
|
/* Patch for trap entry setup... */
|
| 929 |
|
|
PATCH_INSN(tsetup_7win_patch1, tsetup_patch1)
|
| 930 |
|
|
PATCH_INSN(tsetup_7win_patch2, tsetup_patch2)
|
| 931 |
|
|
PATCH_INSN(tsetup_7win_patch3, tsetup_patch3)
|
| 932 |
|
|
PATCH_INSN(tsetup_7win_patch4, tsetup_patch4)
|
| 933 |
|
|
PATCH_INSN(tsetup_7win_patch5, tsetup_patch5)
|
| 934 |
|
|
PATCH_INSN(tsetup_7win_patch6, tsetup_patch6)
|
| 935 |
|
|
|
| 936 |
|
|
/* Patch for returning from traps... */
|
| 937 |
|
|
PATCH_INSN(rtrap_7win_patch1, rtrap_patch1)
|
| 938 |
|
|
PATCH_INSN(rtrap_7win_patch2, rtrap_patch2)
|
| 939 |
|
|
PATCH_INSN(rtrap_7win_patch3, rtrap_patch3)
|
| 940 |
|
|
PATCH_INSN(rtrap_7win_patch4, rtrap_patch4)
|
| 941 |
|
|
PATCH_INSN(rtrap_7win_patch5, rtrap_patch5)
|
| 942 |
|
|
|
| 943 |
|
|
#ifdef __SMP__
|
| 944 |
|
|
|
| 945 |
|
|
/* Patch for returning from an ipi... */
|
| 946 |
|
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PATCH_INSN(rirq_7win_patch1, rirq_patch1)
|
| 947 |
|
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PATCH_INSN(rirq_7win_patch2, rirq_patch2)
|
| 948 |
|
|
PATCH_INSN(rirq_7win_patch3, rirq_patch3)
|
| 949 |
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|
PATCH_INSN(rirq_7win_patch4, rirq_patch4)
|
| 950 |
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PATCH_INSN(rirq_7win_patch5, rirq_patch5)
|
| 951 |
|
|
|
| 952 |
|
|
#endif
|
| 953 |
|
|
|
| 954 |
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2:
|
| 955 |
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sethi %hi( C_LABEL(nwindows) ), %g4
|
| 956 |
|
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st %g3, [%g4 + %lo( C_LABEL(nwindows) )] ! store final value
|
| 957 |
|
|
sub %g3, 0x1, %g3
|
| 958 |
|
|
sethi %hi( C_LABEL(nwindowsm1) ), %g4
|
| 959 |
|
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st %g3, [%g4 + %lo( C_LABEL(nwindowsm1) )]
|
| 960 |
|
|
|
| 961 |
|
|
/* Here we go, start using Linux's trap table... */
|
| 962 |
|
|
set C_LABEL(trapbase), %g3
|
| 963 |
|
|
wr %g3, 0x0, %tbr
|
| 964 |
|
|
WRITE_PAUSE
|
| 965 |
|
|
|
| 966 |
|
|
/* Finally, turn on traps so that we can call c-code. */
|
| 967 |
|
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rd %psr, %g3
|
| 968 |
|
|
wr %g3, 0x0, %psr
|
| 969 |
|
|
WRITE_PAUSE
|
| 970 |
|
|
|
| 971 |
|
|
wr %g3, PSR_ET, %psr
|
| 972 |
|
|
WRITE_PAUSE
|
| 973 |
|
|
|
| 974 |
|
|
/* First we call prom_init() to set up PROMLIB, then
|
| 975 |
|
|
* off to start_kernel().
|
| 976 |
|
|
*/
|
| 977 |
|
|
|
| 978 |
|
|
sethi %hi( C_LABEL(prom_vector_p) ), %g5
|
| 979 |
|
|
ld [%g5 + %lo( C_LABEL(prom_vector_p) )], %o0
|
| 980 |
|
|
call C_LABEL(prom_init)
|
| 981 |
|
|
nop
|
| 982 |
|
|
|
| 983 |
|
|
call C_LABEL(start_kernel)
|
| 984 |
|
|
nop
|
| 985 |
|
|
|
| 986 |
|
|
/* We should not get here. */
|
| 987 |
|
|
call halt_me
|
| 988 |
|
|
nop
|
| 989 |
|
|
|
| 990 |
|
|
/* There, happy now Adrian? */
|
| 991 |
|
|
|
| 992 |
|
|
/* XXX Fix this... XXX */
|
| 993 |
|
|
no_sun4_here:
|
| 994 |
|
|
sethi %hi(SUN4_PROM_VECTOR+SUN4_PRINTF), %o1
|
| 995 |
|
|
ld [%o1 + %lo(SUN4_PROM_VECTOR+SUN4_PRINTF)], %o1
|
| 996 |
|
|
set sun4_notsup, %o0
|
| 997 |
|
|
call %o1
|
| 998 |
|
|
nop
|
| 999 |
|
|
1:
|
| 1000 |
|
|
ba 1b ! Cannot exit into KMON
|
| 1001 |
|
|
nop
|
| 1002 |
|
|
|
| 1003 |
|
|
no_sun4d_here:
|
| 1004 |
|
|
ld [%g7 + 0x68], %o1
|
| 1005 |
|
|
set sun4d_notsup, %o0
|
| 1006 |
|
|
call %o1
|
| 1007 |
|
|
nop
|
| 1008 |
|
|
b halt_me
|
| 1009 |
|
|
nop
|
| 1010 |
|
|
|
| 1011 |
|
|
no_sun4e_here:
|
| 1012 |
|
|
ld [%g7 + 0x68], %o1
|
| 1013 |
|
|
set sun4e_notsup, %o0
|
| 1014 |
|
|
call %o1
|
| 1015 |
|
|
nop
|
| 1016 |
|
|
b halt_me
|
| 1017 |
|
|
nop
|
| 1018 |
|
|
|
| 1019 |
|
|
no_sun4u_here:
|
| 1020 |
|
|
ld [%g7 + 0x68], %o1
|
| 1021 |
|
|
set sun4u_notsup, %o0
|
| 1022 |
|
|
call %o1
|
| 1023 |
|
|
nop
|
| 1024 |
|
|
b halt_me
|
| 1025 |
|
|
nop
|
| 1026 |
|
|
|
| 1027 |
|
|
halt_me:
|
| 1028 |
|
|
ld [%g7 + 0x74], %o0
|
| 1029 |
|
|
call %o0 ! Get us out of here...
|
| 1030 |
|
|
nop ! Apparently Solaris is better.
|
| 1031 |
|
|
|
| 1032 |
|
|
.data
|
| 1033 |
|
|
.align 4
|
| 1034 |
|
|
|
| 1035 |
|
|
/*
|
| 1036 |
|
|
* Fill up the prom vector, note in particular the kind first element,
|
| 1037 |
|
|
* no joke. I don't need all of them in here as the entire prom vector
|
| 1038 |
|
|
* gets initialized in c-code so all routines can use it.
|
| 1039 |
|
|
*/
|
| 1040 |
|
|
|
| 1041 |
|
|
.globl C_LABEL(prom_vector_p)
|
| 1042 |
|
|
C_LABEL(prom_vector_p):
|
| 1043 |
|
|
.word 0
|
| 1044 |
|
|
|
| 1045 |
|
|
/* We calculate the following at boot time, window fills/spills and trap entry
|
| 1046 |
|
|
* code uses these to keep track of the register windows.
|
| 1047 |
|
|
*/
|
| 1048 |
|
|
|
| 1049 |
|
|
.align 4
|
| 1050 |
|
|
.globl C_LABEL(nwindows)
|
| 1051 |
|
|
.globl C_LABEL(nwindowsm1)
|
| 1052 |
|
|
C_LABEL(nwindows):
|
| 1053 |
|
|
.word 8
|
| 1054 |
|
|
C_LABEL(nwindowsm1):
|
| 1055 |
|
|
.word 7
|
| 1056 |
|
|
|
| 1057 |
|
|
/* Boot time debugger vector value. We need this later on. */
|
| 1058 |
|
|
|
| 1059 |
|
|
.align 4
|
| 1060 |
|
|
.globl C_LABEL(linux_dbvec)
|
| 1061 |
|
|
C_LABEL(linux_dbvec):
|
| 1062 |
|
|
.word 0
|
| 1063 |
|
|
.word 0
|
| 1064 |
|
|
|
| 1065 |
|
|
.align 8
|
| 1066 |
|
|
|
| 1067 |
|
|
.globl C_LABEL(lvl14_save)
|
| 1068 |
|
|
C_LABEL(lvl14_save):
|
| 1069 |
|
|
.word 0
|
| 1070 |
|
|
.word 0
|
| 1071 |
|
|
.word 0
|
| 1072 |
|
|
.word 0
|
| 1073 |
|
|
.word t_irq14
|
| 1074 |
|
|
|
