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Use RAM for SMP init instead of NVRAM

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git-svn-id: svn://coreboot.org/openbios/openbios-devel@426 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Blue Swirl
2009-01-25 12:20:12 +00:00
parent 3fae06cd81
commit eea3589cb9
2 changed files with 115 additions and 87 deletions
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37
drivers/obio.c
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@@ -1132,27 +1132,44 @@ ob_interrupt_init(uint64_t base, unsigned long offset)
fword("finish-device");
}
/* SMP CPU boot structure */
struct smp_cfg {
uint32_t smp_ctx;
uint32_t smp_ctxtbl;
uint32_t smp_entry;
uint32_t valid;
};
static struct smp_cfg *smp_header;
int
start_cpu(unsigned int pc, unsigned int context_ptr, unsigned int context, int cpu)
{
ohwcfg_v3_t *header = (ohwcfg_v3_t *)nvram;
struct sparc_arch_cfg *sparc_header;
if (!cpu)
return -1;
sparc_header = (struct sparc_arch_cfg *)&nvram[header->nvram_arch_ptr];
sparc_header->smp_entry = pc;
sparc_header->smp_ctxtbl = context_ptr;
sparc_header->smp_ctx = context;
sparc_header->valid = 1;
cpu &= 7;
smp_header->smp_entry = pc;
smp_header->smp_ctxtbl = context_ptr;
smp_header->smp_ctx = context;
smp_header->valid = cpu;
intregs->cpu_intregs[cpu].set = SUN4M_SOFT_INT(14);
return 0;
}
static void
ob_smp_init(void)
{
unsigned long mem_size;
// See arch/sparc32/entry.S for memory layout
mem_size = fw_cfg_read_i32(FW_CFG_RAM_SIZE);
smp_header = (struct smp_cfg *)map_io((uint64_t)(mem_size - 0x100),
sizeof(struct smp_cfg));
}
static void
ob_obio_open(__attribute__((unused))int *idx)
@@ -1276,5 +1293,7 @@ ob_obio_init(uint64_t slavio_base, unsigned long fd_offset,
ob_interrupt_init(slavio_base, intr_offset);
ob_smp_init();
return 0;
}