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- Get memory size and base MAC address from RedBoot (if available)

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This commit is contained in:
Oleksandr Tymoshenko 2009-05-16 02:43:24 +00:00
parent 9270c7be8b
commit 89616da3f5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/mips/; revision=192178
1 changed files with 52 additions and 2 deletions
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54
sys/mips/atheros/ar71xx_machdep.c
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@ -45,6 +45,8 @@ __FBSDID("$FreeBSD$");
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <net/ethernet.h>
#include <machine/clock.h>
#include <machine/cpu.h>
#include <machine/hwfunc.h>
@ -56,6 +58,7 @@ __FBSDID("$FreeBSD$");
extern int *edata;
extern int *end;
uint32_t ar711_base_mac[ETHER_ADDR_LEN];
void
platform_halt(void)
@ -99,13 +102,43 @@ platform_start(__register_t a0 __unused, __register_t a1 __unused,
vm_offset_t kernend;
uint64_t platform_counter_freq, freq;
uint32_t reg, div, pll_config;
int argc, i, count = 0;
char **argv, **envp;
/* clear the BSS and SBSS segments */
kernend = round_page((vm_offset_t)&end);
memset(&edata, 0, kernend - (vm_offset_t)(&edata));
/* TODO: Get available memory from RedBoot. Is it possible? */
realmem = btoc(64*1024*1024);
argc = a0;
argv = (char**)a1;
envp = (char**)a2;
/*
* Protect ourselves from garbage in registers
*/
if (MIPS_IS_VALID_PTR(envp)) {
for (i = 0; envp[i]; i += 2)
{
if (strcmp(envp[i], "memsize") == 0)
realmem = btoc(strtoul(envp[i+1], NULL, 16));
else if (strcmp(envp[i], "ethaddr") == 0) {
count = sscanf(envp[i+1], "%x.%x.%x.%x.%x.%x",
&ar711_base_mac[0], &ar711_base_mac[1],
&ar711_base_mac[2], &ar711_base_mac[3],
&ar711_base_mac[4], &ar711_base_mac[5]);
if (count < 6)
memset(ar711_base_mac, 0,
sizeof(ar711_base_mac));
}
}
}
/*
* Just wild guess. RedBoot let us down and didn't reported
* memory size
*/
if (realmem == 0)
realmem = btoc(32*1024*1024);
/* phys_avail regions are in bytes */
phys_avail[0] = MIPS_KSEG0_TO_PHYS((vm_offset_t)&end);
phys_avail[1] = ctob(realmem);
@ -134,6 +167,23 @@ platform_start(__register_t a0 __unused, __register_t a1 __unused,
printf(" a2 = %08x\n", a2);
printf(" a3 = %08x\n", a3);
printf("Cmd line:");
if (MIPS_IS_VALID_PTR(argv)) {
for (i = 0; i < argc; i++)
printf(" %s", argv[i]);
}
else
printf ("argv is invalid");
printf("\n");
printf("Environment:\n");
if (MIPS_IS_VALID_PTR(envp)) {
for (i = 0; envp[i]; i+=2)
printf(" %s = %s\n", envp[i], envp[i+1]);
}
else
printf ("envp is invalid\n");
init_param2(physmem);
mips_cpu_init();
pmap_bootstrap();