summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorFabio Estevam <festevam@gmail.com>2011-12-20 05:46:33 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-01-16 08:40:09 +0100
commit5bcc6a8901020ce22a996ef438cfc7be7a0c3995 (patch)
tree261b44dc73a4b469a6a4846f9345e5474413e509 /arch
parent5cb525f3d205d6696c4a42d5bfb9ec8c73543091 (diff)
downloadu-boot-imx-5bcc6a8901020ce22a996ef438cfc7be7a0c3995.zip
u-boot-imx-5bcc6a8901020ce22a996ef438cfc7be7a0c3995.tar.gz
u-boot-imx-5bcc6a8901020ce22a996ef438cfc7be7a0c3995.tar.bz2
mx28: Let dram_init be common for mx28
Let dram_init function be a common function, so that other mx28 boards can reuse it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/arm926ejs/mx28/mx28.c21
-rw-r--r--arch/arm/include/asm/arch-mx28/sys_proto.h2
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28.c b/arch/arm/cpu/arm926ejs/mx28/mx28.c
index ad4fabd..da90360 100644
--- a/arch/arm/cpu/arm926ejs/mx28/mx28.c
+++ b/arch/arm/cpu/arm926ejs/mx28/mx28.c
@@ -260,6 +260,27 @@ void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
}
#endif
+#define HW_DIGCTRL_SCRATCH0 0x8001c280
+#define HW_DIGCTRL_SCRATCH1 0x8001c290
+int mx28_dram_init(void)
+{
+ uint32_t sz[2];
+
+ sz[0] = readl(HW_DIGCTRL_SCRATCH0);
+ sz[1] = readl(HW_DIGCTRL_SCRATCH1);
+
+ if (sz[0] != sz[1]) {
+ printf("MX28:\n"
+ "Error, the RAM size in HW_DIGCTRL_SCRATCH0 and\n"
+ "HW_DIGCTRL_SCRATCH1 is not the same. Please\n"
+ "verify these two registers contain valid RAM size!\n");
+ hang();
+ }
+
+ gd->ram_size = sz[0];
+ return 0;
+}
+
U_BOOT_CMD(
clocks, CONFIG_SYS_MAXARGS, 1, do_mx28_showclocks,
"display clocks",
diff --git a/arch/arm/include/asm/arch-mx28/sys_proto.h b/arch/arm/include/asm/arch-mx28/sys_proto.h
index be1f7db..f101494 100644
--- a/arch/arm/include/asm/arch-mx28/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx28/sys_proto.h
@@ -35,4 +35,6 @@ void mx28_common_spl_init(const iomux_cfg_t *iomux_setup,
const unsigned int iomux_size);
#endif
+int mx28_dram_init(void);
+
#endif /* __MX28_H__ */