77 lines
2.3 KiB
Diff
77 lines
2.3 KiB
Diff
From 16df170ad4808d12acd5e919ac4f6e7f33a247b3 Mon Sep 17 00:00:00 2001
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From: AKASHI Takahiro <takahiro.akashi@linaro.org>
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Date: Thu, 1 Sep 2016 10:57:42 +0900
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Subject: [PATCH 3/9] arm64: identify PHYS_OFFSET correctly
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Due to the kernel patch, commit e7cd190385d1 ("arm64: mark reserved
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memblock regions explicitly in iomem"), the current code will not be able
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to identify the correct value of PHYS_OFFSET if some "reserved" memory
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region, which is likely to be UEFI runtime services code/data, exists at
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an address below the first "System RAM" regions.
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This patch fixes this issue.
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Upstream-Status: Backport [https://git.linaro.org/people/takahiro.akashi/kexec-tools.git]
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Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
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Signed-off-by: He Zhe <zhe.he@windriver.com>
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---
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kexec/arch/arm64/iomem.h | 7 +++++++
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kexec/arch/arm64/kexec-arm64.c | 12 ++++++++++--
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2 files changed, 17 insertions(+), 2 deletions(-)
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create mode 100644 kexec/arch/arm64/iomem.h
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diff --git a/kexec/arch/arm64/iomem.h b/kexec/arch/arm64/iomem.h
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new file mode 100644
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index 0000000..7fd66eb
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--- /dev/null
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+++ b/kexec/arch/arm64/iomem.h
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@@ -0,0 +1,7 @@
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+#ifndef IOMEM_H
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+#define IOMEM_H
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+
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+#define SYSTEM_RAM "System RAM\n"
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+#define IOMEM_RESERVED "reserved\n"
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+
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+#endif
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diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
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index 2e8839a..8ac811d 100644
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--- a/kexec/arch/arm64/kexec-arm64.c
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+++ b/kexec/arch/arm64/kexec-arm64.c
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@@ -21,6 +21,7 @@
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#include "crashdump-arm64.h"
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#include "dt-ops.h"
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#include "fs2dt.h"
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+#include "iomem.h"
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#include "kexec-syscall.h"
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#include "arch/options.h"
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@@ -475,7 +476,14 @@ static int get_memory_ranges_iomem_cb(void *data, int nr, char *str,
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return -1;
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r = (struct memory_range *)data + nr;
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- r->type = RANGE_RAM;
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+
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+ if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)))
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+ r->type = RANGE_RAM;
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+ else if (!strncmp(str, IOMEM_RESERVED, strlen(IOMEM_RESERVED)))
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+ r->type = RANGE_RESERVED;
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+ else
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+ return 1;
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+
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r->start = base;
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r->end = base + length - 1;
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@@ -494,7 +502,7 @@ static int get_memory_ranges_iomem_cb(void *data, int nr, char *str,
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static int get_memory_ranges_iomem(struct memory_range *array,
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unsigned int *count)
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{
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- *count = kexec_iomem_for_each_line("System RAM\n",
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+ *count = kexec_iomem_for_each_line(NULL,
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get_memory_ranges_iomem_cb, array);
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if (!*count) {
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--
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1.9.1
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