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6c74274c8d
It is based on patches from the linux-longsoon-community git tree: http://dev.lemote.com/cgit/linux-loongson-community.git/ Now the kernel can use the command line parameter from kexec-tools. Runtime tested on ar71xx with 2.6.39.4 (the wathdog must be stopped before executing the new kernel). Compile tested with lantiq (3.1.4) and brcm47xx (3.0.12). SVN-Revision: 29674
53 lines
1.5 KiB
Diff
53 lines
1.5 KiB
Diff
From 49d07a29653b1f2c6ae273b3d8fe93d981f43004 Mon Sep 17 00:00:00 2001
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From: Wu Zhangjin <wuzhangjin@gmail.com>
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Date: Wed, 12 Jan 2011 20:59:32 +0000
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Subject: MIPS: Kexec: Init the arguments for the new kernel image
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Whenever the kexec-tools pass the command lines to the new kernel image,
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init the arguments as the ones for the 1st kernel image. This fixed the
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booting failure of Kexec on YeeLoong.
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Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
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---
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--- a/arch/mips/kernel/machine_kexec.c
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+++ b/arch/mips/kernel/machine_kexec.c
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@@ -10,6 +10,7 @@
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#include <linux/mm.h>
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#include <linux/delay.h>
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+#include <asm/bootinfo.h>
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#include <asm/cacheflush.h>
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#include <asm/page.h>
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@@ -21,9 +22,30 @@ void (*relocated_kexec_smp_wait) (void *
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atomic_t kexec_ready_to_reboot = ATOMIC_INIT(0);
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#endif
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+static void machine_kexec_init_args(void)
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+{
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+ kexec_args[0] = fw_arg0;
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+ kexec_args[1] = fw_arg1;
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+ kexec_args[2] = fw_arg2;
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+ kexec_args[3] = fw_arg3;
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+
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+ pr_info("kexec_args[0] (argc): %lu\n", kexec_args[0]);
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+ pr_info("kexec_args[1] (argv): %p\n", (void *)kexec_args[1]);
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+ pr_info("kexec_args[2] (env ): %p\n", (void *)kexec_args[2]);
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+ pr_info("kexec_args[3] (desc): %p\n", (void *)kexec_args[3]);
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+}
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+
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int
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machine_kexec_prepare(struct kimage *kimage)
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{
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+ /*
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+ * Whenever arguments passed from kexec-tools, Init the arguments as
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+ * the original ones to avoid booting failure.
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+ *
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+ * This can be overrided by _machine_kexec_prepare().
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+ */
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+ machine_kexec_init_args();
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+
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if (_machine_kexec_prepare)
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return _machine_kexec_prepare(kimage);
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return 0;
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