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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [mips/] [lasat/] [prom.c] - Blame information for rev 1765

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/*
 * PROM interface routines.
 */
#include <linux/types.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/ioport.h>
#include <asm/bootinfo.h>
#include <asm/lasat/lasat.h>
#include <asm/cpu.h>
 
#include "at93c.h"
#include <asm/lasat/eeprom.h>
#include "prom.h"
 
#define RESET_VECTOR    0xbfc00000
#define PROM_JUMP_TABLE_ENTRY(n) (*((u32 *)(RESET_VECTOR + 0x20) + n))
#define PROM_DISPLAY_ADDR       PROM_JUMP_TABLE_ENTRY(0)
#define PROM_PUTC_ADDR          PROM_JUMP_TABLE_ENTRY(1)
#define PROM_MONITOR_ADDR       PROM_JUMP_TABLE_ENTRY(2)
 
static void null_prom_printf(const char * fmt, ...)
{
}
 
static void null_prom_display(const char *string, int pos, int clear)
{
}
 
static void null_prom_monitor(void)
{
}
 
static void null_prom_putc(char c)
{
}
 
/* these are functions provided by the bootloader */
static void (* prom_putc)(char c) = null_prom_putc;
void (* prom_printf)(const char * fmt, ...) = null_prom_printf;
void (* prom_display)(const char *string, int pos, int clear) =
                null_prom_display;
void (* prom_monitor)(void) = null_prom_monitor;
 
unsigned int lasat_ndelay_divider;
 
#define PROM_PRINTFBUF_SIZE 256
static char prom_printfbuf[PROM_PRINTFBUF_SIZE];
 
static void real_prom_printf(const char * fmt, ...)
{
        va_list ap;
        int len;
        char *c = prom_printfbuf;
        int i;
 
        va_start(ap, fmt);
        len = vsnprintf(prom_printfbuf, PROM_PRINTFBUF_SIZE, fmt, ap);
        va_end(ap);
 
        /* output overflowed the buffer */
        if (len < 0 || len > PROM_PRINTFBUF_SIZE)
                len = PROM_PRINTFBUF_SIZE;
 
        for (i=0; i < len; i++) {
                if (*c == '\n')
                        prom_putc('\r');
                prom_putc(*c++);
        }
}
 
static void setup_prom_vectors(void)
{
        u32 version = *(u32 *)(RESET_VECTOR + 0x90);
 
        if (version >= 306) {
                prom_display = (void *)PROM_DISPLAY_ADDR;
                prom_putc = (void *)PROM_PUTC_ADDR;
                prom_printf = real_prom_printf;
                prom_monitor = (void *)PROM_MONITOR_ADDR;
        }
        prom_printf("prom vectors set up\n");
}
 
char arcs_cmdline[CL_SIZE];
 
static struct at93c_defs at93c_defs[N_MACHTYPES] = {
        {(void *)AT93C_REG_100, (void *)AT93C_RDATA_REG_100, AT93C_RDATA_SHIFT_100,
        AT93C_WDATA_SHIFT_100, AT93C_CS_M_100, AT93C_CLK_M_100},
        {(void *)AT93C_REG_200, (void *)AT93C_RDATA_REG_200, AT93C_RDATA_SHIFT_200,
        AT93C_WDATA_SHIFT_200, AT93C_CS_M_200, AT93C_CLK_M_200},
};
 
void __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
{
        setup_prom_vectors();
 
        if (current_cpu_data.cputype == CPU_R5000) {
                mips_machtype = MACH_LASAT_200;
                lasat_ndelay_divider = 8;
        } else {
                mips_machtype = MACH_LASAT_100;
                lasat_ndelay_divider = 20;
        }
 
        at93c = &at93c_defs[mips_machtype];
 
        lasat_init_board_info();                /* Read info from EEPROM */
 
        mips_machgroup = MACH_GROUP_LASAT;
 
        /* Get the command line */
        if (argc>0) {
                strncpy(arcs_cmdline, argv[0], CL_SIZE-1);
                arcs_cmdline[CL_SIZE-1] = '\0';
        }
 
        /* Set the I/O base address */
        set_io_port_base(KSEG1);
 
        /* Set memory regions */
        ioport_resource.start = 0;               /* Should be KSEGx ???  */
        ioport_resource.end = 0xffffffff;       /* Should be ???        */
 
        add_memory_region(0, lasat_board_info.li_memsize, BOOT_MEM_RAM);
}
 
void prom_free_prom_memory(void)
{
}
 
const char *get_system_type(void)
{
        return lasat_board_info.li_bmstr;
}

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* PROM interface routines.`
3			`*/`
4			`#include <linux/types.h>`
5			`#include <linux/config.h>`
6			`#include <linux/init.h>`
7			`#include <linux/string.h>`
8			`#include <linux/ctype.h>`
9			`#include <linux/kernel.h>`
10			`#include <linux/mm.h>`
11			`#include <linux/bootmem.h>`
12			`#include <linux/ioport.h>`
13			`#include <asm/bootinfo.h>`
14			`#include <asm/lasat/lasat.h>`
15			`#include <asm/cpu.h>`
16
17			`#include "at93c.h"`
18			`#include <asm/lasat/eeprom.h>`
19			`#include "prom.h"`
20
21			`#define RESET_VECTOR 0xbfc00000`
22			`#define PROM_JUMP_TABLE_ENTRY(n) (((u32 )(RESET_VECTOR + 0x20) + n))`
23			`#define PROM_DISPLAY_ADDR PROM_JUMP_TABLE_ENTRY(0)`
24			`#define PROM_PUTC_ADDR PROM_JUMP_TABLE_ENTRY(1)`
25			`#define PROM_MONITOR_ADDR PROM_JUMP_TABLE_ENTRY(2)`
26
27			`static void null_prom_printf(const char * fmt, ...)`
28			`{`
29			`}`
30
31			`static void null_prom_display(const char *string, int pos, int clear)`
32			`{`
33			`}`
34
35			`static void null_prom_monitor(void)`
36			`{`
37			`}`
38
39			`static void null_prom_putc(char c)`
40			`{`
41			`}`
42
43			`/* these are functions provided by the bootloader */`
44			`static void (* prom_putc)(char c) = null_prom_putc;`
45			`void (* prom_printf)(const char * fmt, ...) = null_prom_printf;`
46			`void (* prom_display)(const char *string, int pos, int clear) =`
47			`null_prom_display;`
48			`void (* prom_monitor)(void) = null_prom_monitor;`
49
50			`unsigned int lasat_ndelay_divider;`
51
52			`#define PROM_PRINTFBUF_SIZE 256`
53			`static char prom_printfbuf[PROM_PRINTFBUF_SIZE];`
54
55			`static void real_prom_printf(const char * fmt, ...)`
56			`{`
57			`va_list ap;`
58			`int len;`
59			`char *c = prom_printfbuf;`
60			`int i;`
61
62			`va_start(ap, fmt);`
63			`len = vsnprintf(prom_printfbuf, PROM_PRINTFBUF_SIZE, fmt, ap);`
64			`va_end(ap);`
65
66			`/* output overflowed the buffer */`
67			`if (len < 0 \|\| len > PROM_PRINTFBUF_SIZE)`
68			`len = PROM_PRINTFBUF_SIZE;`
69
70			`for (i=0; i < len; i++) {`
71			`if (*c == '\n')`
72			`prom_putc('\r');`
73			`prom_putc(*c++);`
74			`}`
75			`}`
76
77			`static void setup_prom_vectors(void)`
78			`{`
79			`u32 version = (u32 )(RESET_VECTOR + 0x90);`
80
81			`if (version >= 306) {`
82			`prom_display = (void *)PROM_DISPLAY_ADDR;`
83			`prom_putc = (void *)PROM_PUTC_ADDR;`
84			`prom_printf = real_prom_printf;`
85			`prom_monitor = (void *)PROM_MONITOR_ADDR;`
86			`}`
87			`prom_printf("prom vectors set up\n");`
88			`}`
89
90			`char arcs_cmdline[CL_SIZE];`
91
92			`static struct at93c_defs at93c_defs[N_MACHTYPES] = {`
93			`{(void )AT93C_REG_100, (void )AT93C_RDATA_REG_100, AT93C_RDATA_SHIFT_100,`
94			`AT93C_WDATA_SHIFT_100, AT93C_CS_M_100, AT93C_CLK_M_100},`
95			`{(void )AT93C_REG_200, (void )AT93C_RDATA_REG_200, AT93C_RDATA_SHIFT_200,`
96			`AT93C_WDATA_SHIFT_200, AT93C_CS_M_200, AT93C_CLK_M_200},`
97			`};`
98
99			`void __init prom_init(int argc, char argv, char envp, int *prom_vec)`
100			`{`
101			`setup_prom_vectors();`
102
103			`if (current_cpu_data.cputype == CPU_R5000) {`
104			`mips_machtype = MACH_LASAT_200;`
105			`lasat_ndelay_divider = 8;`
106			`} else {`
107			`mips_machtype = MACH_LASAT_100;`
108			`lasat_ndelay_divider = 20;`
109			`}`
110
111			`at93c = &at93c_defs[mips_machtype];`
112
113			`lasat_init_board_info(); /* Read info from EEPROM */`
114
115			`mips_machgroup = MACH_GROUP_LASAT;`
116
117			`/* Get the command line */`
118			`if (argc>0) {`
119			`strncpy(arcs_cmdline, argv[0], CL_SIZE-1);`
120			`arcs_cmdline[CL_SIZE-1] = '\0';`
121			`}`
122
123			`/* Set the I/O base address */`
124			`set_io_port_base(KSEG1);`
125
126			`/* Set memory regions */`
127			`ioport_resource.start = 0; /* Should be KSEGx ??? */`
128			`ioport_resource.end = 0xffffffff; /* Should be ??? */`
129
130			`add_memory_region(0, lasat_board_info.li_memsize, BOOT_MEM_RAM);`
131			`}`
132
133			`void prom_free_prom_memory(void)`
134			`{`
135			`}`
136
137			`const char *get_system_type(void)`
138			`{`
139			`return lasat_board_info.li_bmstr;`
140			`}`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [mips/] [lasat/] [prom.c] - Blame information for rev 1765