From: Sergey Yanovich <ynvich@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] arm: pxa: PXA270 D-Cache as ram
Date: Tue, 21 May 2013 02:06:26 +0400 [thread overview]
Message-ID: <1369087586-1344-1-git-send-email-ynvich@gmail.com> (raw)
2.2.5.2 of Marvell PXA27x Processor Family Developers Manual says:
"The PXA27x processor cache configuration is identical to that of
the PXA255 processor."
As a result, it is perfectly legitimate to use PXA25X
'lock_cache_for_stack' on PXA27X as well.
Signed-off-by: Sergey Yanovich <ynvich@gmail.com>
---
arch/arm/cpu/pxa/start.S | 10 ++++++++--
include/configs/lp8x4x.h | 5 +++--
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
index ada91a6..5ea512e 100644
--- a/arch/arm/cpu/pxa/start.S
+++ b/arch/arm/cpu/pxa/start.S
@@ -40,6 +40,12 @@
#include <version.h>
#ifdef CONFIG_CPU_PXA25X
+#ifndef CONFIG_PXA2XX_CACHE_AS_RAM
+#define CONFIG_PXA2XX_CACHE_AS_RAM
+#endif
+#endif
+
+#ifdef CONFIG_PXA2XX_CACHE_AS_RAM
#if ((CONFIG_SYS_INIT_SP_ADDR) != 0xfffff800)
#error "Init SP address must be set to 0xfffff800 for PXA250"
#endif
@@ -164,7 +170,7 @@ reset:
bl cpu_init_crit
#endif
-#ifdef CONFIG_CPU_PXA25X
+#ifdef CONFIG_PXA2XX_CACHE_AS_RAM
bl lock_cache_for_stack
#endif
@@ -482,7 +488,7 @@ fiq:
* This is useful on PXA25x and PXA26x in early bootstages, where there is no
* other possible memory available to hold stack.
*/
-#ifdef CONFIG_CPU_PXA25X
+#ifdef CONFIG_PXA2XX_CACHE_AS_RAM
.macro CPWAIT reg
mrc p15, 0, \reg, c2, c0, 0
mov \reg, \reg
diff --git a/include/configs/lp8x4x.h b/include/configs/lp8x4x.h
index 026f321..27ff2f4 100644
--- a/include/configs/lp8x4x.h
+++ b/include/configs/lp8x4x.h
@@ -149,8 +149,9 @@
#define CONFIG_SYS_LOAD_ADDR 0xa0008000
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
-/* Use first 64kb bank of the internal SRAM */
-#define CONFIG_SYS_INIT_SP_ADDR 0x5c010000
+/* Use CPU data cache as internal RAM */
+#define CONFIG_PXA2XX_CACHE_AS_RAM
+#define CONFIG_SYS_INIT_SP_ADDR 0xfffff800
/*
* NOR FLASH
--
1.7.10.4
next reply other threads:[~2013-05-20 22:06 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-20 22:06 Sergey Yanovich [this message]
2013-05-21 10:39 ` [U-Boot] [PATCH] arm: pxa: PXA270 D-Cache as ram Marek Vasut
2013-05-21 10:42 ` Sergey Yanovich
2013-05-21 10:54 ` Marek Vasut
2013-05-21 11:23 ` Sergey Yanovich
2013-05-21 11:38 ` Marek Vasut
2013-05-21 11:56 ` Sergey Yanovich
2013-05-21 15:00 ` Marek Vasut
2013-05-21 16:31 ` Sergey Yanovich
2013-05-21 19:02 ` Marek Vasut
2013-05-21 19:18 ` Sergey Yanovich
2013-05-21 19:24 ` Marek Vasut
2013-05-21 19:42 ` Sergey Yanovich
2013-05-21 20:07 ` Marek Vasut
2013-05-21 20:24 ` Sergey Yanovich
2013-05-21 21:38 ` Marek Vasut
2013-05-22 13:02 ` Sergey Yanovich
2013-05-22 13:04 ` Marek Vasut
2013-05-22 13:21 ` Sergey Yanovich
2013-05-22 13:54 ` Marek Vasut
2013-05-23 17:43 ` Mike Dunn
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