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[POWERPC] 4xx: Adds decoding of 440SPE memory size to boot wrapper library

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This adds a function to the bootwrapper 4xx library to decode memory
size on 440SPE processors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Benjamin Herrenschmidt
2007-12-21 15:39:31 +11:00
committed by Josh Boyer
parent 007b6aa811
commit d23f509929
7 changed files with 85 additions and 21 deletions
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arch/powerpc/boot/dcr.h
+9 -1
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@@ -14,12 +14,20 @@
#define DCRN_SDRAM0_CFGADDR 0x010
#define DCRN_SDRAM0_CFGDATA 0x011
#define SDRAM0_READ(offset) ({\
mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
mfdcr(DCRN_SDRAM0_CFGDATA); })
#define SDRAM0_WRITE(offset, data) ({\
mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
mtdcr(DCRN_SDRAM0_CFGDATA, data); })
#define SDRAM0_B0CR 0x40
#define SDRAM0_B1CR 0x44
#define SDRAM0_B2CR 0x48
#define SDRAM0_B3CR 0x4c
static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR, SDRAM0_B2CR, SDRAM0_B3CR };
static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR,
SDRAM0_B2CR, SDRAM0_B3CR };
#define SDRAM_CONFIG_BANK_ENABLE 0x00000001
#define SDRAM_CONFIG_SIZE_MASK 0x000e0000