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authorGreg Watson <jarrah@users.sourceforge.net>2003-10-05 05:13:12 +0000
committerGreg Watson <jarrah@users.sourceforge.net>2003-10-05 05:13:12 +0000
commitbe956f096f51ab8eae32f4ba58b1cd4716d057b1 (patch)
tree6606ba7fc3e95a6a199ad9b5a5e25686cbde33bc /src
parentccf4d34bb746356486d4c02599d9e5c8346b8d81 (diff)
downloadcoreboot-be956f096f51ab8eae32f4ba58b1cd4716d057b1.tar.xz
size memory
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1192 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src')
-rw-r--r--src/cpu/ppc/ppc4xx/mem.c54
1 files changed, 53 insertions, 1 deletions
diff --git a/src/cpu/ppc/ppc4xx/mem.c b/src/cpu/ppc/ppc4xx/mem.c
index 9fa6daa19b..f1bd2f8b8e 100644
--- a/src/cpu/ppc/ppc4xx/mem.c
+++ b/src/cpu/ppc/ppc4xx/mem.c
@@ -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;
}
+