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size memory 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1192 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Greg Watson 2003-10-05 05:13:12 +00:00
parent ccf4d34bb7
commit be956f096f
1 changed files with 53 additions and 1 deletions
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54
src/cpu/ppc/ppc4xx/mem.c
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@ -1,7 +1,59 @@
#include <ppc.h>
#include <mem.h>
#include <console/console.h>
#define SDRAM0_CFGADDR 0x010
#define SDRAM0_CFGDATA 0x011
#define SDRAM0_B0CR 0x40
#define SDRAM0_B1CR 0x44
#define SDRAM0_B2CR 0x48
#define SDRAM0_B3CR 0x4C
#define BA_MASK 0xffc00000
#define BA_SHIFT 22
#define SZ_MASK 0x000e0000
#define SZ_SHIFT 17
#define AM_MASK 0x0000e000
#define AM_SHIFT 13
#define BE_MASK 0x00000001
#define BE_SHIFT 0
struct mem_range mem_bank[4];
void
getmemrange(int bank, unsigned int reg)
{
unsigned int val;
unsigned int size;
mtdcr(SDRAM0_CFGADDR, reg);
val = mfdcr(SDRAM0_CFGDATA);
if ((val & BE_MASK) == 0)
{
mem_bank[bank].basek = 0;
mem_bank[bank].sizek = 0;
return;
}
size = ((val & BA_MASK) >> BA_SHIFT);
mem_bank[bank].basek = size * 1024;
size = 4 << ((val & SZ_MASK) >> SZ_SHIFT);
mem_bank[bank].sizek = size * 1024;
printk_info("mem bank %d: basek %d, sizek %d\n", bank, mem_bank[bank].basek, mem_bank[bank].sizek);
}
struct mem_range *
sizeram(void)
{
return 0;
getmemrange(0, SDRAM0_B0CR);
getmemrange(1, SDRAM0_B1CR);
getmemrange(2, SDRAM0_B2CR);
getmemrange(3, SDRAM0_B3CR);
return mem_bank;
}