This patch fixes a problem with the SDRAM initialization of the zeus board port. It also enable the FDT support to support booting arch/powerpc Linux kernel versions.
Signed-off-by: Stefan Roese sr@denx.de --- board/zeus/zeus.c | 23 ----------------------- cpu/ppc4xx/sdram.c | 14 ++++++++++---- include/configs/zeus.h | 6 ++++++ 3 files changed, 16 insertions(+), 27 deletions(-)
diff --git a/board/zeus/zeus.c b/board/zeus/zeus.c index 33d971a..2a4ec5c 100644 --- a/board/zeus/zeus.c +++ b/board/zeus/zeus.c @@ -190,29 +190,6 @@ int checkboard(void) return (0); }
-static u32 detect_sdram_size(void) -{ - u32 val; - u32 size; - - mfsdram(mem_mb0cf, val); - size = (4 << 20) << ((val & 0x000e0000) >> 17); - - /* - * Check if 2nd bank is enabled too - */ - mfsdram(mem_mb1cf, val); - if (val & 1) - size += (4 << 20) << ((val & 0x000e0000) >> 17); - - return size; -} - -phys_size_t initdram (int board_type) -{ - return detect_sdram_size(); -} - static int default_env_var(char *buf, char *var) { char *ptr; diff --git a/cpu/ppc4xx/sdram.c b/cpu/ppc4xx/sdram.c index 7d60ad6..b5a6a4c 100644 --- a/cpu/ppc4xx/sdram.c +++ b/cpu/ppc4xx/sdram.c @@ -209,15 +209,15 @@ phys_size_t initdram(int board_type) udelay(10000);
if (get_ram_size(0, mb0cf[i].size) == mb0cf[i].size) { + phys_size_t size = mb0cf[i].size; + /* * OK, size detected. Enable second bank if * defined (assumes same type as bank 0) */ #ifdef CONFIG_SDRAM_BANK1 - u32 b1cr = mb0cf[i].size | mb0cf[i].reg; - mtsdram(mem_mcopt1, 0x00000000); - mtsdram(mem_mb1cf, b1cr); /* SDRAM0_B1CR */ + mtsdram(mem_mb1cf, mb0cf[i].size | mb0cf[i].reg); mtsdram(mem_mcopt1, 0x80800000); udelay(10000);
@@ -230,13 +230,19 @@ phys_size_t initdram(int board_type) mb0cf[i].size) { mtsdram(mem_mb1cf, 0); mtsdram(mem_mcopt1, 0); + } else { + /* + * We have two identical banks, so the size + * is twice the bank size + */ + size = 2 * size; } #endif
/* * OK, size detected -> all done */ - return mb0cf[i].size; + return size; } }
diff --git a/include/configs/zeus.h b/include/configs/zeus.h index b50cba5..b71f711 100644 --- a/include/configs/zeus.h +++ b/include/configs/zeus.h @@ -309,6 +309,12 @@ #define CONFIG_KGDB_SER_INDEX 2 /* which serial port to use */ #endif
+/* + * Pass open firmware flat tree + */ +#define CONFIG_OF_LIBFDT +#define CONFIG_OF_BOARD_SETUP + /* ENVIRONMENT VARS */
#define CONFIG_PREBOOT "echo;echo Welcome to Bulletendpoints board v1.1;echo"