davinci: da850/omap-l138: create static map for SRAM

Create static map for internal SRAM and populate SRAM base
and size in soc_info structure to allow SRAM allocation
functions from arch/arm/mach-davinci/sram.c to work.

On DA850 SRAM is used for suspend-to-RAM implementation
in places where DDR2 cannot be accessed as its clocks are
stopped.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index fcfde2a72f8f..1ac8f6318c1b 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -771,6 +771,12 @@ static struct map_desc da850_io_desc[] = {
                 .length         = DA8XX_CP_INTC_SIZE,
                 .type           = MT_DEVICE
         },
+        {
+                .virtual        = SRAM_VIRT,
+                .pfn            = __phys_to_pfn(DA8XX_ARM_RAM_BASE),
+                .length         = SZ_8K,
+                .type           = MT_DEVICE
+        },
 };
 
 static void __iomem *da850_psc_bases[] = {
@@ -1044,6 +1050,8 @@ static struct davinci_soc_info davinci_soc_info_da850 = {
         .gpio_irq               = IRQ_DA8XX_GPIO0,
         .serial_dev             = &da8xx_serial_device,
         .emac_pdata             = &da8xx_emac_pdata,
+        .sram_dma               = DA8XX_ARM_RAM_BASE,
+        .sram_len               = SZ_8K,
 };
 
 void __init da850_init(void)
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index cab4a25ebe4f..d43a4b6b6d76 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -57,6 +57,7 @@ extern void __iomem *da8xx_syscfg1_base;
 #define DA8XX_AEMIF_CS3_BASE    0x62000000
 #define DA8XX_AEMIF_CTL_BASE    0x68000000
 #define DA8XX_DDR2_CTL_BASE     0xb0000000
+#define DA8XX_ARM_RAM_BASE      0xffff0000
 
 #define PINMUX0                 0x00
 #define PINMUX1                 0x04