> -----Original Message-----
> From: [email protected] [mailto:linux-omap-
> [email protected]] On Behalf Of Vikram Pandita
> Sent: Saturday, July 10, 2010 12:39 PM
> To: [email protected]
> Cc: Pandita, Vikram
> Subject: [PATCH 3/3] omap4: SRAM start and size change for EMU/HS devices
>
> On OMAP4 the SRAM configuration is:
> GP Device:
> Start Address: 0x4030 0000
> Size: 0xE000 (56KB)
>
> EMU/HS Device:
> Start Address: 0x4030 4000
> Size: 0xA000 (40KB)
>
> Implement this mapping in the sram file
>
> Signed-off-by: Vikram Pandita <[email protected]>
> ---
> arch/arm/plat-omap/sram.c | 17 +++++++++++++----
> 1 files changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
> index 112b807..3c7c9a6 100644
> --- a/arch/arm/plat-omap/sram.c
> +++ b/arch/arm/plat-omap/sram.c
> @@ -53,7 +53,7 @@
> #define OMAP4_SRAM_PUB_PA (OMAP4_SRAM_PA + 0x4000)
> #define OMAP4_SRAM_PUB_VA (OMAP4_SRAM_VA + 0x4000)
>
> -#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
> +#if defined(CONFIG_ARCH_OMAP2PLUS)
Only this line needs to be added in this patch
> #define SRAM_BOOTLOADER_SZ 0x00
> #else
> #define SRAM_BOOTLOADER_SZ 0x80
> @@ -134,9 +134,18 @@ void __init omap_detect_sram(void)
> omap_sram_size = 0x8000; /* 32K */
> }
> } else if (cpu_is_omap44xx()) {
> - omap_sram_base = OMAP4_SRAM_PUB_VA;
> - omap_sram_start = OMAP4_SRAM_PUB_PA;
> - omap_sram_size = 0xa000; /* 40K */
> + if ((omap_type() == OMAP2_DEVICE_TYPE_EMU) ||
> + (omap_type() == OMAP2_DEVICE_TYPE_SEC)) {
> + /* 40K For Public SRAM */
> + omap_sram_base = OMAP4_SRAM_PUB_VA;
> + omap_sram_start = OMAP4_SRAM_PUB_PA;
> + omap_sram_size = 0xA000;
> + } else {
> + /* 56 KB SRAM on GP device */
> + omap_sram_base = OMAP4_SRAM_VA;
> + omap_sram_start = OMAP4_SRAM_PA;
> + omap_sram_size = 0xE000;
Not necessary. If the "is_sram_locked" retunrs the correct retun value then
this already handled.
Just look below the else part which handles the GP and if already has EMU size.
> + }
> } else {
> omap_sram_base = OMAP2_SRAM_PUB_VA;
> omap_sram_start = OMAP2_SRAM_PUB_PA;
> --
> 1.6.6.1
>
> --
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