linux-kernel - [PATCH 1/1] davinci: changed SRAM allocator to shared ram.

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Date:	Fri, 11 Feb 2011 19:51:28 +0530
From:	Subhasish Ghosh <subhasish@...tralsolutions.com>
To:	davinci-linux-open-source@...ux.davincidsp.com
Cc:	linux-arm-kernel@...ts.infradead.org, m-watkins@...com,
	nsekhar@...com, sachi@...tralsolutions.com,
	Subhasish Ghosh <subhasish@...tralsolutions.com>,
	Kevin Hilman <khilman@...prootsystems.com> (supporter:TI DAVINCI
	MACHIN...,commit_signer:16/18=89%),
	Russell King <linux@....linux.org.uk> (maintainer:ARM PORT),
	Michael Williamson <michael.williamson@...ticallink.com> (commit_signer:5/18=28%),
	Cyril Chemparathy <cyril@...com> (commit_signer:3/18=17%),
	Sergei Shtylyov <sshtylyov@...mvista.com> (commit_signer:3/18=17%),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/1] davinci: changed SRAM allocator to shared ram.

This patch modifies the sram allocator to allocate memory
from the DA8XX shared RAM.

Signed-off-by: Subhasish Ghosh <subhasish@...tralsolutions.com>
---
 arch/arm/mach-davinci/da850.c              |    6 +++---
 arch/arm/mach-davinci/include/mach/da8xx.h |    1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 3443d97..8a4de97 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -711,7 +711,7 @@ static struct map_desc da850_io_desc[] = {
 	},
 	{
 		.virtual	= SRAM_VIRT,
-		.pfn		= __phys_to_pfn(DA8XX_ARM_RAM_BASE),
+		.pfn		= __phys_to_pfn(DA8XX_SHARED_RAM_BASE),
 		.length		= SZ_8K,
 		.type		= MT_DEVICE
 	},
@@ -1083,8 +1083,8 @@ 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,
+	.sram_dma		= DA8XX_SHARED_RAM_BASE,
+	.sram_len		= SZ_128K,
 	.reset_device		= &da8xx_wdt_device,
 };
 
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index cfcb223..c3c3339 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -70,6 +70,7 @@ extern unsigned int da850_max_speed;
 #define DA8XX_AEMIF_CTL_BASE	0x68000000
 #define DA8XX_DDR2_CTL_BASE	0xb0000000
 #define DA8XX_ARM_RAM_BASE	0xffff0000
+#define DA8XX_SHARED_RAM_BASE	0x80000000
 
 void __init da830_init(void);
 void __init da850_init(void);
-- 
1.7.2.3

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