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57 lines
2.0 KiB
Diff
57 lines
2.0 KiB
Diff
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From ad739ffebf689abdbcddbe4e1b0bf847d7931a92 Mon Sep 17 00:00:00 2001
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From: Mathias Kresin <dev@kresin.me>
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Date: Fri, 20 Jan 2017 13:59:53 +0100
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Subject: [PATCH] MIPS: lantiq: reduce stack size
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On lantiq a lot of stuff expects to be loaded to and executed at
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0x80002000, including our own second stage bootloader.
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For all build u-boots, the initial stack pointer is at 0x80008000. After
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loading data to 0x80002000, every further stack operation corrupts the
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loaded code.
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Set the initial stack pointer to 0x80002000, to not overwrite code
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loaded in memory. A stack of 0x2000 bytes has been proven as enough in
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all done tests.
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Signed-off-by: Mathias Kresin <dev@kresin.me>
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---
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arch/mips/include/asm/arch-arx100/config.h | 2 +-
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arch/mips/include/asm/arch-danube/config.h | 2 +-
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arch/mips/include/asm/arch-vrx200/config.h | 2 +-
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3 files changed, 3 insertions(+), 3 deletions(-)
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--- a/arch/mips/include/asm/arch-arx100/config.h
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+++ b/arch/mips/include/asm/arch-arx100/config.h
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@@ -66,7 +66,7 @@
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#define CONFIG_SYS_MEMTEST_END 0x82000000
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#define CONFIG_SYS_LOAD_ADDR 0x81000000
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#define CONFIG_SYS_LOAD_SIZE (2 * 1024 * 1024)
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-#define CONFIG_SYS_INIT_SP_OFFSET (32 * 1024)
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+#define CONFIG_SYS_INIT_SP_OFFSET 0x2000
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/* SRAM */
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#define CONFIG_SYS_SRAM_BASE 0xBE1A0000
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--- a/arch/mips/include/asm/arch-danube/config.h
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+++ b/arch/mips/include/asm/arch-danube/config.h
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@@ -57,7 +57,7 @@
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#define CONFIG_SYS_MEMTEST_END 0x82000000
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#define CONFIG_SYS_LOAD_ADDR 0x81000000
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#define CONFIG_SYS_LOAD_SIZE (2 * 1024 * 1024)
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-#define CONFIG_SYS_INIT_SP_OFFSET 0x4000
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+#define CONFIG_SYS_INIT_SP_OFFSET 0x2000
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/* SRAM */
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#define CONFIG_SYS_SRAM_BASE 0xBE1A0000
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--- a/arch/mips/include/asm/arch-vrx200/config.h
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+++ b/arch/mips/include/asm/arch-vrx200/config.h
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@@ -69,7 +69,7 @@
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#define CONFIG_SYS_MEMTEST_END 0x82000000
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#define CONFIG_SYS_LOAD_ADDR 0x81000000
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#define CONFIG_SYS_LOAD_SIZE (2 * 1024 * 1024)
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-#define CONFIG_SYS_INIT_SP_OFFSET (32 * 1024)
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+#define CONFIG_SYS_INIT_SP_OFFSET 0x2000
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/* SRAM */
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#define CONFIG_SYS_SRAM_BASE 0xBE220000
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