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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 31/34] ARM: Automatically determine malloc size
Date: Fri,  1 Feb 2013 08:59:44 +0100	[thread overview]
Message-ID: <1359705587-9762-32-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1359705587-9762-1-git-send-email-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/cpu/start.c  |   28 ++++++++++++++++++++++++++++
 arch/arm/lib/Makefile |    1 -
 arch/arm/lib/arm.c    |   14 --------------
 3 files changed, 28 insertions(+), 15 deletions(-)
 delete mode 100644 arch/arm/lib/arm.c

diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index d90b244..cd34d9c 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -35,6 +35,7 @@ static noinline __noreturn void __start(uint32_t membase, uint32_t memsize,
 		uint32_t boarddata)
 {
 	unsigned long endmem = membase + memsize;
+	unsigned long malloc_start, malloc_end;
 
 	setup_c();
 
@@ -50,6 +51,33 @@ static noinline __noreturn void __start(uint32_t membase, uint32_t memsize,
 			mmu_early_enable(membase, memsize, endmem);
 	}
 
+	if ((unsigned long)_text > membase + memsize ||
+			(unsigned long)_text < membase)
+		/*
+		 * barebox is either outside SDRAM or in another
+		 * memory bank, so we can use the whole bank for
+		 * malloc.
+		 */
+		malloc_end = endmem;
+	else
+		malloc_end = (unsigned long)_text;
+
+	/*
+	 * Maximum malloc space is the Kconfig value if given
+	 * or 64MB.
+	 */
+	if (MALLOC_SIZE > 0) {
+		malloc_start = malloc_end - MALLOC_SIZE;
+		if (malloc_start < membase)
+			malloc_start = membase;
+	} else {
+		malloc_start = malloc_end - (malloc_end - membase) / 2;
+		if (malloc_end - malloc_start > SZ_64M)
+			malloc_start = malloc_end - SZ_64M;
+	}
+
+	mem_malloc_init((void *)malloc_start, (void *)malloc_end - 1);
+
 	start_barebox();
 }
 
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 2e624cd..3ea695c 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -4,7 +4,6 @@ obj-$(CONFIG_CMD_BOOTZ)	+= bootz.o
 obj-$(CONFIG_CMD_BOOTU)	+= bootu.o
 obj-y	+= div0.o
 obj-y	+= findbit.o
-obj-y	+= arm.o
 obj-y	+= io.o
 obj-y	+= io-readsb.o
 obj-y	+= io-readsw-armv4.o
diff --git a/arch/arm/lib/arm.c b/arch/arm/lib/arm.c
deleted file mode 100644
index 80b62e9..0000000
--- a/arch/arm/lib/arm.c
+++ /dev/null
@@ -1,14 +0,0 @@
-#include <common.h>
-#include <init.h>
-#include <memory.h>
-#include <asm/barebox-arm.h>
-#include <asm-generic/memory_layout.h>
-
-static int arm_mem_malloc_init(void)
-{
-	mem_malloc_init((void *)MALLOC_BASE,
-			(void *)(MALLOC_BASE + MALLOC_SIZE - 1));
-	return 0;
-}
-
-core_initcall(arm_mem_malloc_init);
-- 
1.7.10.4


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  parent reply	other threads:[~2013-02-01  7:59 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-01  7:59 [PATCH v2] Add new ARM entry point for barebox Sascha Hauer
2013-02-01  7:59 ` [PATCH 01/34] ARM: Add new " Sascha Hauer
2013-02-01  7:59 ` [PATCH 02/34] ARM: add __noreturn to board_init_lowlevel_return Sascha Hauer
2013-02-01  7:59 ` [PATCH 03/34] ARM i.MX: Use SRAM stack in lowlevel code Sascha Hauer
2013-02-01  7:59 ` [PATCH 04/34] ARM i.MX: Add i.MX specific entry point for barebox Sascha Hauer
2013-02-01  7:59 ` [PATCH 05/34] ARM i.MX: prepare external nand boot for SoC specific entry Sascha Hauer
2013-02-01  7:59 ` [PATCH 06/34] ARM i.MX boards: switch to barebox_arm_entry Sascha Hauer
2013-02-01  7:59 ` [PATCH 07/34] ARM MXS " Sascha Hauer
2013-02-01  7:59 ` [PATCH 08/34] ARM OMAP " Sascha Hauer
2013-02-01  7:59 ` [PATCH 09/34] ARM Samsung " Sascha Hauer
2013-02-01  7:59 ` [PATCH 10/34] ARM PXA " Sascha Hauer
2013-02-01  7:59 ` [PATCH 11/34] ARM ep93xx " Sascha Hauer
2013-02-01  7:59 ` [PATCH 12/34] ARM tegra " Sascha Hauer
2013-02-01  7:59 ` [PATCH 13/34] ARM nomadik " Sascha Hauer
2013-02-01  7:59 ` [PATCH 14/34] ARM versatile " Sascha Hauer
2013-02-01  7:59 ` [PATCH 15/34] ARM netx " Sascha Hauer
2013-02-01  7:59 ` [PATCH 16/34] ARM clep7212: " Sascha Hauer
2013-02-01  7:59 ` [PATCH 17/34] ARM raspberrypi: " Sascha Hauer
2013-02-01  7:59 ` [PATCH 18/34] ARM AT91: switch to barebox_arm_entry part1 Sascha Hauer
2013-02-01  8:11   ` Jean-Christophe PLAGNIOL-VILLARD
2013-02-03 10:13     ` Jean-Christophe PLAGNIOL-VILLARD
2013-02-01  7:59 ` [PATCH 19/34] ARM AT91: switch at91rm9200 board to barebox_arm_entry Sascha Hauer
2013-02-01  7:59 ` [PATCH 20/34] ARM AT91: switch sama5d3 " Sascha Hauer
2013-02-01  7:59 ` [PATCH 21/34] ARM AT91: switch remaining boards " Sascha Hauer
2013-02-01  8:12   ` Jean-Christophe PLAGNIOL-VILLARD
2013-02-02 21:23   ` Jean-Christophe PLAGNIOL-VILLARD
2013-02-01  7:59 ` [PATCH 22/34] ARM: remove now unused MACH_[HAS|DO]_LOWLEVEL_INIT Sascha Hauer
2013-02-01  7:59 ` [PATCH 23/34] ARM start-pbl: make board_init_lowlevel_return static Sascha Hauer
2013-02-01  7:59 ` [PATCH 24/34] ARM start-pbl: call uncompressed binary with arguments Sascha Hauer
2013-02-01  7:59 ` [PATCH 25/34] ARM start: pickup parameters from pbl Sascha Hauer
2013-02-01  7:59 ` [PATCH 26/34] ARM: Setup stack at end of SDRAM Sascha Hauer
2013-02-01  7:59 ` [PATCH 27/34] ARM pbl: Use dynamic parameters for early malloc space Sascha Hauer
2013-02-01  7:59 ` [PATCH 28/34] ARM mmu: pickup already enabled mmu Sascha Hauer
2013-02-01  7:59 ` [PATCH 29/34] ARM: Factor out early mmu code Sascha Hauer
2013-02-01  7:59 ` [PATCH 30/34] ARM: Enable mmu early Sascha Hauer
2013-02-01  7:59 ` Sascha Hauer [this message]
2013-02-01  7:59 ` [PATCH 32/34] generic memory layout: fix deps for [MALLOC|STACK]_BASE Sascha Hauer
2013-02-01  7:59 ` [PATCH 33/34] ARM: disable HAVE_CONFIGURABLE_MEMORY_LAYOUT Sascha Hauer
2013-02-01  7:59 ` [PATCH 34/34] ARM pbl: inline decompress function Sascha Hauer
2013-02-01  8:15 ` [PATCH v2] Add new ARM entry point for barebox Jean-Christophe PLAGNIOL-VILLARD
  -- strict thread matches above, loose matches on Subject: below --
2013-01-27 10:46 [PATCH] " Sascha Hauer
2013-01-27 10:47 ` [PATCH 31/34] ARM: Automatically determine malloc size Sascha Hauer

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