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http://forum.armbian.com/index.php/topic/6-sdk-how-to-compile-your-own-kernel-and-sd-image/page-3
125 lines
3.3 KiB
Diff
125 lines
3.3 KiB
Diff
diff -Nur a/arch/arm/mach-sunxi/power/brom/Makefile b/arch/arm/mach-sunxi/power/brom/Makefile
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--- a/arch/arm/mach-sunxi/power/brom/Makefile 2016-03-07 23:43:50.629142681 +0100
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+++ b/arch/arm/mach-sunxi/power/brom/Makefile 2016-03-07 23:52:43.092375154 +0100
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@@ -3,6 +3,8 @@
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always := resumes.code
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targets := resumes.elf
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+hostprogs-y := mksunxichecksum
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+
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#use "-Os" flags.
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#Don't use "-O2" flags.
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KBUILD_CFLAGS := -g -c -nostdlib -march=armv7-a -marm -fno-unwind-tables -fno-asynchronous-unwind-tables -mlittle-endian -O2
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@@ -22,8 +24,8 @@
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resumes-y := $(addprefix $(obj)/,$(resumes-y))
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-$(obj)/resumes.code: $(src)/gen_check_code $(obj)/resumes.bin
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- $(Q)$< $(obj)/resumes.bin $(obj)/resumes.code
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+$(obj)/resumes.code: $(obj)/resumes.bin $(obj)/mksunxichecksum
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+ $(obj)/mksunxichecksum $(obj)/resumes.bin $(obj)/resumes.code
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$(obj)/resumes.bin: $(obj)/resumes.elf FORCE
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$(Q)$(CROSS_COMPILE)objcopy -O binary $(obj)/resumes.elf $(obj)/resumes.bin
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diff -Nur a/arch/arm/mach-sunxi/power/brom/mksunxichecksum.c b/arch/arm/mach-sunxi/power/brom/mksunxichecksum.c
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--- a/arch/arm/mach-sunxi/power/brom/mksunxichecksum.c 1970-01-01 01:00:00.000000000 +0100
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+++ b/arch/arm/mach-sunxi/power/brom/mksunxichecksum.c 2016-01-05 19:45:42.000000000 +0100
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@@ -0,0 +1,98 @@
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+/*
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+ * (C) Copyright 2015 Jean-Francois Moine
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+ * (C) Copyright 2014 Henrik Nordstrom
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+ *
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+ * Based on mksunxiboot
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+ *
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+ * (C) Copyright 2007-2011
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+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+#include <stdio.h>
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+#include <string.h>
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+#include <errno.h>
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+#include <stdint.h>
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+#include <stdlib.h>
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+
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+/* boot head definition from sun4i boot code */
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+struct boot_file_head {
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+ uint32_t b_instruction; /* one intruction jumping to real code */
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+ uint8_t magic[8]; /* ="eGON.BT0" or "eGON.BT1", not C-style str */
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+ uint32_t check_sum; /* generated by PC */
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+ uint32_t length; /* generated by PC */
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+ /*
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+ * We use a simplified header, only filling in what is needed
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+ * for checksum calculation.
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+ */
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+};
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+
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+#define STAMP_VALUE 0x5F0A6C39
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+
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+/* check sum functon from sun4i boot code */
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+static int gen_check_sum(struct boot_file_head *head_p)
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+{
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+ uint32_t length;
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+ uint32_t *buf;
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+ uint32_t loop;
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+ uint32_t i;
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+ uint32_t sum;
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+
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+ length = head_p->length;
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+// if ((length & 0x3) != 0) /* must 4-byte-aligned */
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+// return -1;
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+ buf = (uint32_t *)head_p;
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+ head_p->check_sum = STAMP_VALUE; /* fill stamp */
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+ loop = length >> 2;
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+
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+ /* calculate the sum */
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+ for (i = 0, sum = 0; i < loop; i++)
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+ sum += buf[i];
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+
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+ /* write back check sum */
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+ head_p->check_sum = sum;
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+
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+ return 0;
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+}
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+
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+int main(int argc, char *argv[])
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+{
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+ struct boot_file_head h, *buf;
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+ unsigned file_size;
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+ FILE *f;
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+
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+ if (argc != 3) {
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+ printf("Usage: %s file.bin file.code\n"
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+ "calculates BROM checksum in boot header of given .bin file and writes to .code file\n"
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+ "", argv[0]);
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+ exit(1);
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+ }
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+
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+ f = fopen(argv[1], "rb");
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+ if (!f) {
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+ perror("Open input file");
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+ exit(1);
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+ }
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+
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+ fread(&h, 1, sizeof h, f);
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+ file_size = h.length; // wanted length
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+
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+ buf = malloc(file_size);
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+ memset(buf, 0xff, file_size);
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+ rewind(f);
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+
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+ fread(buf, 1, file_size, f);
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+ fclose(f);
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+
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+ gen_check_sum(buf);
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+
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+ f = fopen(argv[2], "wb");
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+ if (!f) {
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+ perror("Open output file");
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+ exit(1);
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+ }
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+ fwrite(buf, 1, file_size, f);
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+ fclose(f);
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+
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+ return 0;
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+}
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