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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 05/11] ARM: add early malloc support needed by the decompressor
Date: Wed, 25 Jul 2012 10:02:47 +0200	[thread overview]
Message-ID: <1343203373-18641-5-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1343203373-18641-1-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 18c5c83..8ab6fdc 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_IMAGE_COMPRESSION
 void __naked __section(.text_head_entry) compressed_start(void)
 {
@@ -158,6 +161,10 @@ 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:[~2012-07-25  8:02 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-25  7:57 [PATCH 00/11 V3] compressed image update Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02 ` [PATCH 01/11] stddev: make it selectable via Kconfig Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 02/11] decompress_unlzo: define decompress_unlzo as decompress Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 03/11] compressed image: factorise compressor type Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 04/11] decompressor: import malloc/free implementation for linux 3.4 Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-07-25  8:02   ` [PATCH 06/11] compressed: rename barebox target to zbarebox and zbarebox.bin Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 07/11] compressed image: add gzip support Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 08/11] kbuild: Init all relevant variables used in kbuild files so Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 09/11] kbuild: add comp-y target Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 10/11] arm: use the new built-comp.o generated files Jean-Christophe PLAGNIOL-VILLARD
2012-07-25  8:02   ` [PATCH 11/11] at91: add lowlevel init to the decompressor Jean-Christophe PLAGNIOL-VILLARD

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