[U-Boot] [PATCH v3 1/3] mpc5121: determine RAM size using get_ram_size()

[Anatolij Gustschin]

Configure 1GiB address range in DDR LAW and
determine the RAM size. Fix DDR LAW afterwards.

Signed-off-by: Anatolij Gustschin <agust at denx.de>
---
 arch/ppc/cpu/mpc512x/fixed_sdram.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/ppc/cpu/mpc512x/fixed_sdram.c b/arch/ppc/cpu/mpc512x/fixed_sdram.c
index 72d524c..01ae0a5 100644
--- a/arch/ppc/cpu/mpc512x/fixed_sdram.c
+++ b/arch/ppc/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 = 1024 * 1024 * 1024;
 	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, 0x40000000);
+	/* Fix DDR Local Window for new size */
+	out_be32(&im->sysconf.ddrlaw.ar, __ilog2(msize) - 1);
+	sync_law(&im->sysconf.ddrlaw.ar);
+
 	return msize;
 }
-- 
1.6.3.3