MIPS: ralink: add memory definition for RT2880

Populate struct soc_info with the data that describes our RAM window.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5181/

2 files changed, 8 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-ralink/rt288x.h b/arch/mips/include/asm/mach-ralink/rt288x.h
index ad8b42dd2fcc..03ad716acb42 100644
--- a/arch/mips/include/asm/mach-ralink/rt288x.h
+++ b/arch/mips/include/asm/mach-ralink/rt288x.h
@@ -46,4 +46,8 @@
 
 #define CLKCFG_SRAM_CS_N_WDT            BIT(9)
 
+#define RT2880_SDRAM_BASE               0x08000000
+#define RT2880_MEM_SIZE_MIN             2
+#define RT2880_MEM_SIZE_MAX             128
+
 #endif
diff --git a/arch/mips/ralink/rt288x.c b/arch/mips/ralink/rt288x.c
index 1e0788e75af6..f87de1ab2198 100644
--- a/arch/mips/ralink/rt288x.c
+++ b/arch/mips/ralink/rt288x.c
@@ -136,4 +136,8 @@ void prom_soc_init(struct ralink_soc_info *soc_info)
                 name,
                 (id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
                 (id & CHIP_ID_REV_MASK));
+
+        soc_info->mem_base = RT2880_SDRAM_BASE;
+        soc_info->mem_size_min = RT2880_MEM_SIZE_MIN;
+        soc_info->mem_size_max = RT2880_MEM_SIZE_MAX;
 }