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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 10/12] ARM: add early malloc support needed by the decompressor
Date: Fri, 27 Jul 2012 20:33:08 +0200	[thread overview]
Message-ID: <1343413990-31891-10-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1343413990-31891-1-git-send-email-plagnioj@jcrosoft.com>

This is not needed by lzo but by gunzip, xz and others.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 arch/arm/cpu/start.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index a54f5fd..f500ca8 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -28,6 +28,9 @@
 #include <asm-generic/memory_layout.h>
 #include <asm/sections.h>
 
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
+
 #ifdef CONFIG_PBL_IMAGE
 void __naked __section(.text_head_entry) pbl_start(void)
 {
@@ -193,6 +196,10 @@ void __naked __section(.text_ll_return) board_init_lowlevel_return(void)
 	/* clear bss */
 	memset(__bss_start, 0, __bss_stop - __bss_start);
 
+	/* set 128 KiB before the STACK_BASE - 16 address for early malloc */
+	free_mem_ptr = STACK_BASE - 0x20000 - 16;
+	free_mem_end_ptr = STACK_BASE - 16;
+
 	/* flush I-cache before jumping to the copied binary */
 	__asm__ __volatile__("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
 
-- 
1.7.10.4


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  parent reply	other threads:[~2012-07-27 18:33 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-27 18:31 [PATCH 00/12] Add Pre-Bootloader support Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:32 ` [PATCH 01/12] kbuild: Init all relevant variables used in kbuild files so Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 02/12] kbuild: add pre-bootloader (pbl) target Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 03/12] Add pre-bootloader (pbl) image support Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 04/12] pbl: discard unwind symbol if enable in barebox Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 05/12] Add compressed image support Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 06/12] only compress default env in uncompressed images Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 07/12] ARM: Separate assembler functions into their own section Jean-Christophe PLAGNIOL-VILLARD
2012-07-30  7:50     ` Sascha Hauer
2012-07-30  8:27       ` Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 08/12] decompress_unlzo: define decompress_unlzo as decompress Jean-Christophe PLAGNIOL-VILLARD
2012-07-30  7:56     ` Sascha Hauer
2012-07-30  8:06       ` Sascha Hauer
2012-07-27 18:33   ` [PATCH 09/12] decompressor: import malloc/free implementation for linux 3.4 Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-07-30  8:02     ` [PATCH 10/12] ARM: add early malloc support needed by the decompressor Sascha Hauer
2012-07-30  8:19       ` Jean-Christophe PLAGNIOL-VILLARD
2012-07-30  8:30         ` Sascha Hauer
2012-07-30  8:49           ` Jean-Christophe PLAGNIOL-VILLARD
2012-07-30  8:59             ` Sascha Hauer
2012-07-30  9:04               ` Jean-Christophe PLAGNIOL-VILLARD
2012-07-30  9:20                 ` Sascha Hauer
2012-07-30  9:30                   ` Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 11/12] compressed image: add gzip support Jean-Christophe PLAGNIOL-VILLARD
2012-07-27 18:33   ` [PATCH 12/12] at91: add lowlevel init to the pbl Jean-Christophe PLAGNIOL-VILLARD

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