diff options
| author | Anatolij Gustschin <agust@denx.de> | 2010-04-24 19:27:08 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-04-24 22:56:35 +0200 |
| commit | b9947bbb08d0483be03004bdbce283b644471cb7 (patch) | |
| tree | 888421b4d4be7a9ea2f32c85ee838a1e6c2dae10 /arch/powerpc | |
| parent | 5d937e8b59f27d8c300a2e78c168a4c22ec6922a (diff) | |
mpc5121: determine RAM size using get_ram_size()
Configure CONFIG_SYS_MAX_RAM_SIZE address range in
DDR Local Access Window and determine the RAM size.
Fix DDR LAW afterwards using detected RAM size.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc512x/fixed_sdram.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc512x/fixed_sdram.c b/arch/powerpc/cpu/mpc512x/fixed_sdram.c index 72d524caad..550cbd0bd6 100644 --- a/arch/powerpc/cpu/mpc512x/fixed_sdram.c +++ b/arch/powerpc/cpu/mpc512x/fixed_sdram.c @@ -78,7 +78,7 @@ long int fixed_sdram(ddr512x_config_t *mddrc_config, u32 *dram_init_seq, int seq_sz) { volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024; + u32 msize = CONFIG_SYS_MAX_RAM_SIZE; u32 msize_log2 = __ilog2(msize); u32 i; @@ -148,5 +148,10 @@ long int fixed_sdram(ddr512x_config_t *mddrc_config, out_be32(&im->mddrc.ddr_time_config0, mddrc_config->ddr_time_config0); out_be32(&im->mddrc.ddr_sys_config, mddrc_config->ddr_sys_config); + msize = get_ram_size(CONFIG_SYS_DDR_BASE, CONFIG_SYS_MAX_RAM_SIZE); + /* Fix DDR Local Window for new size */ + out_be32(&im->sysconf.ddrlaw.ar, __ilog2(msize) - 1); + sync_law(&im->sysconf.ddrlaw.ar); + return msize; } |