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>
diff --git a/arch/powerpc/cpu/mpc512x/fixed_sdram.c b/arch/powerpc/cpu/mpc512x/fixed_sdram.c
index 72d524c..550cbd0 100644
--- a/arch/powerpc/cpu/mpc512x/fixed_sdram.c
+++ b/arch/powerpc/cpu/mpc512x/fixed_sdram.c
@@ -78,7 +78,7 @@
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 @@
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;
}