diff options
| author | Stefan Roese <sr@denx.de> | 2009-07-27 10:53:43 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2009-07-28 07:22:46 +0200 |
| commit | f3ed3c9b7441cde936d06a1ff7b1490ff0d600e6 (patch) | |
| tree | 9a74e71f00e6db47a2cea750509126ab10f12483 /board/amcc | |
| parent | ab4c62c1ba788bf7f673a985d99a76d9c2fd7eca (diff) | |
ppc4xx: Fix Arches DDR2 initialization
Testing on AMCC Arches with the latest U-Boot version yielded that DDR2
initialization is currently broken. U-Boot hangs upon relocation to SDRAM
or crashes with random traps. This patch fixes this problem. Arches now
uses a different WRDTR and CLKTR default setting than Canyonlands/Glacier.
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/amcc')
| -rw-r--r-- | board/amcc/canyonlands/canyonlands.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/board/amcc/canyonlands/canyonlands.c b/board/amcc/canyonlands/canyonlands.c index cfc1023f4f..c0c135201f 100644 --- a/board/amcc/canyonlands/canyonlands.c +++ b/board/amcc/canyonlands/canyonlands.c @@ -40,6 +40,24 @@ DECLARE_GLOBAL_DATA_PTR; #define BOARD_GLACIER 3 #define BOARD_ARCHES 4 +/* + * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with + * board specific values. + */ +#if defined(CONFIG_ARCHES) +u32 ddr_wrdtr(u32 default_val) { + return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_0_DEG | 0x823); +} +#else +u32 ddr_wrdtr(u32 default_val) { + return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_180_DEG_ADV | 0x823); +} + +u32 ddr_clktr(u32 default_val) { + return (SDRAM_CLKTR_CLKP_90_DEG_ADV); +} +#endif + #if defined(CONFIG_ARCHES) /* * FPGA read/write helper macros @@ -286,18 +304,6 @@ int checkboard(void) } #endif /* !defined(CONFIG_ARCHES) */ -/* - * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with - * board specific values. - */ -u32 ddr_wrdtr(u32 default_val) { - return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_180_DEG_ADV | 0x823); -} - -u32 ddr_clktr(u32 default_val) { - return (SDRAM_CLKTR_CLKP_90_DEG_ADV); -} - #if defined(CONFIG_NAND_U_BOOT) /* * NAND booting U-Boot version uses a fixed initialization, since the whole |