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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/x86/boot/compressed/mkpiggy.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/boot/compressed/mkpiggy.c')
-rw-r--r--arch/x86/boot/compressed/mkpiggy.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/mkpiggy.c b/arch/x86/boot/compressed/mkpiggy.c
new file mode 100644
index 000000000..52aa56cdb
--- /dev/null
+++ b/arch/x86/boot/compressed/mkpiggy.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright (C) 2009 Intel Corporation. All rights reserved.
+ *
+ * H. Peter Anvin <hpa@linux.intel.com>
+ *
+ * -----------------------------------------------------------------------
+ *
+ * Outputs a small assembly wrapper with the appropriate symbols defined.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <tools/le_byteshift.h>
+
+int main(int argc, char *argv[])
+{
+ uint32_t olen;
+ long ilen;
+ FILE *f = NULL;
+ int retval = 1;
+
+ if (argc < 2) {
+ fprintf(stderr, "Usage: %s compressed_file\n", argv[0]);
+ goto bail;
+ }
+
+ /* Get the information for the compressed kernel image first */
+
+ f = fopen(argv[1], "r");
+ if (!f) {
+ perror(argv[1]);
+ goto bail;
+ }
+
+
+ if (fseek(f, -4L, SEEK_END)) {
+ perror(argv[1]);
+ }
+
+ if (fread(&olen, sizeof(olen), 1, f) != 1) {
+ perror(argv[1]);
+ goto bail;
+ }
+
+ ilen = ftell(f);
+ olen = get_unaligned_le32(&olen);
+
+ printf(".section \".rodata..compressed\",\"a\",@progbits\n");
+ printf(".globl z_input_len\n");
+ printf("z_input_len = %lu\n", ilen);
+ printf(".globl z_output_len\n");
+ printf("z_output_len = %lu\n", (unsigned long)olen);
+
+ printf(".globl input_data, input_data_end\n");
+ printf("input_data:\n");
+ printf(".incbin \"%s\"\n", argv[1]);
+ printf("input_data_end:\n");
+
+ printf(".section \".rodata\",\"a\",@progbits\n");
+ printf(".globl input_len\n");
+ printf("input_len:\n\t.long %lu\n", ilen);
+ printf(".globl output_len\n");
+ printf("output_len:\n\t.long %lu\n", (unsigned long)olen);
+
+ retval = 0;
+bail:
+ if (f)
+ fclose(f);
+ return retval;
+}