[OpenBIOS] r196 - openbios-devel/arch/sparc64
svn at openbios.org
svn at openbios.org
Tue Jul 8 18:02:43 CEST 2008
Author: blueswirl
Date: 2008-07-08 18:02:43 +0200 (Tue, 08 Jul 2008)
New Revision: 196
Added:
openbios-devel/arch/sparc64/aoutload.c
Modified:
openbios-devel/arch/sparc64/boot.c
openbios-devel/arch/sparc64/boot.h
openbios-devel/arch/sparc64/build.xml
Log:
Add a.out support for SILO
Added: openbios-devel/arch/sparc64/aoutload.c
===================================================================
--- openbios-devel/arch/sparc64/aoutload.c (rev 0)
+++ openbios-devel/arch/sparc64/aoutload.c 2008-07-08 16:02:43 UTC (rev 196)
@@ -0,0 +1,146 @@
+/* a.out boot loader
+ * As we have seek, this implementation can be straightforward.
+ * 2003-07 by SONE Takeshi
+ */
+
+#include "openbios/config.h"
+#include "openbios/kernel.h"
+#define CONFIG_SPARC64_PAGE_SIZE_8KB
+#include "a.out.h"
+#include "sys_info.h"
+#include "loadfs.h"
+#include "boot.h"
+#define printf printk
+#define debug printk
+
+#define addr_fixup(addr) ((addr) & 0x00ffffff)
+
+static char *image_name, *image_version;
+const char *program_name, *program_version;
+
+static int check_mem_ranges(struct sys_info *info,
+ unsigned long start,
+ unsigned long size)
+{
+ int j;
+ unsigned long end;
+ unsigned long prog_start, prog_end;
+ struct memrange *mem;
+
+ prog_start = virt_to_phys(&_start);
+ prog_end = virt_to_phys(&_end);
+
+ end = start + size;
+
+ if (start < prog_start && end > prog_start)
+ goto conflict;
+ if (start < prog_end && end > prog_end)
+ goto conflict;
+ mem = info->memrange;
+ for (j = 0; j < info->n_memranges; j++) {
+ if (mem[j].base <= start && mem[j].base + mem[j].size >= end)
+ break;
+ }
+ if (j >= info->n_memranges)
+ goto badseg;
+ return 1;
+
+ conflict:
+ printf("%s occupies [%#lx-%#lx]\n", program_name, prog_start, prog_end);
+
+ badseg:
+ printf("A.out file [%#lx-%#lx] doesn't fit into memory\n", start, end - 1);
+ return 0;
+}
+
+int aout_load(struct sys_info *info, const char *filename, const char *cmdline)
+{
+ int retval = -1;
+ int image_retval;
+ struct exec ehdr;
+ unsigned long start, size;
+ unsigned int offset;
+
+ image_name = image_version = 0;
+
+ if (!file_open(filename))
+ goto out;
+
+ for (offset = 0; offset < 16 * 512; offset += 512) {
+ file_seek(offset);
+ if (lfile_read(&ehdr, sizeof ehdr) != sizeof ehdr) {
+ debug("Can't read a.out header\n");
+ retval = LOADER_NOT_SUPPORT;
+ goto out;
+ }
+ if (!N_BADMAG(ehdr))
+ break;
+ }
+
+ if (N_BADMAG(ehdr)) {
+ debug("Not a bootable a.out image\n");
+ retval = LOADER_NOT_SUPPORT;
+ goto out;
+ }
+
+ if (ehdr.a_text == 0x30800007)
+ ehdr.a_text=64*1024;
+
+ if (N_MAGIC(ehdr) == NMAGIC) {
+ size = addr_fixup(N_DATADDR(ehdr)) + addr_fixup(ehdr.a_data);
+ } else {
+ size = addr_fixup(ehdr.a_text) + addr_fixup(ehdr.a_data);
+ }
+
+ if (size < 7680)
+ size = 7680;
+
+
+ start = 0x4000; // N_TXTADDR(ehdr);
+
+ if (!check_mem_ranges(info, start, size))
+ goto out;
+
+ printf("Loading a.out %s...\n", image_name ? image_name : "image");
+
+ file_seek(offset + N_TXTOFF(ehdr));
+
+ if (N_MAGIC(ehdr) == NMAGIC) {
+ if ((unsigned long)lfile_read((void *)start, ehdr.a_text) != ehdr.a_text) {
+ printf("Can't read program text segment (size 0x%lx)\n", ehdr.a_text);
+ goto out;
+ }
+ if ((unsigned long)lfile_read((void *)(start + N_DATADDR(ehdr)), ehdr.a_data) != ehdr.a_data) {
+ printf("Can't read program data segment (size 0x%lx)\n", ehdr.a_data);
+ goto out;
+ }
+ } else {
+ if ((unsigned long)lfile_read((void *)start, size) != size) {
+ printf("Can't read program (size 0x%lx)\n", size);
+ goto out;
+ }
+ }
+
+ debug("Loaded %lu bytes\n", size);
+
+ debug("entry point is %#lx\n", start);
+ printf("Jumping to entry point...\n");
+
+#if 1
+ {
+ int (*entry)(unsigned long p1, unsigned long p2, unsigned long p3,
+ unsigned long p4, unsigned long p5);
+ extern int of_client_interface( int *params );
+
+ entry = (void *) addr_fixup(start);
+ image_retval = entry(0, 0, 0, 0, (unsigned long)&of_client_interface);
+ }
+#endif
+
+ printf("Image returned with return value %#x\n", image_retval);
+ retval = 0;
+
+out:
+ file_close();
+ return retval;
+}
Modified: openbios-devel/arch/sparc64/boot.c
===================================================================
--- openbios-devel/arch/sparc64/boot.c 2008-07-08 15:59:40 UTC (rev 195)
+++ openbios-devel/arch/sparc64/boot.c 2008-07-08 16:02:43 UTC (rev 196)
@@ -67,13 +67,15 @@
if (elf_load(&sys_info, path, param) == LOADER_NOT_SUPPORT)
- if (linux_load(&sys_info, path, param) == LOADER_NOT_SUPPORT) {
+ if (linux_load(&sys_info, path, param) == LOADER_NOT_SUPPORT)
+ if (aout_load(&sys_info, path, param) == LOADER_NOT_SUPPORT) {
sprintf(altpath, "%s:d", path);
if (elf_load(&sys_info, altpath, param) == LOADER_NOT_SUPPORT)
if (linux_load(&sys_info, altpath, param) == LOADER_NOT_SUPPORT)
- printk("Unsupported image format\n");
+ if (aout_load(&sys_info, altpath, param) == LOADER_NOT_SUPPORT)
+ printk("Unsupported image format\n");
}
free(path);
Modified: openbios-devel/arch/sparc64/boot.h
===================================================================
--- openbios-devel/arch/sparc64/boot.h 2008-07-08 15:59:40 UTC (rev 195)
+++ openbios-devel/arch/sparc64/boot.h 2008-07-08 16:02:43 UTC (rev 196)
@@ -9,6 +9,7 @@
int forth_load(struct sys_info *info, const char *filename, const char *cmdline);
int elf_load(struct sys_info *info, const char *filename, const char *cmdline);
int linux_load(struct sys_info *info, const char *file, const char *cmdline);
+int aout_load(struct sys_info *info, const char *filename, const char *cmdline);
uint64_t start_elf(uint64_t entry_point, uint64_t param);
Modified: openbios-devel/arch/sparc64/build.xml
===================================================================
--- openbios-devel/arch/sparc64/build.xml 2008-07-08 15:59:40 UTC (rev 195)
+++ openbios-devel/arch/sparc64/build.xml 2008-07-08 16:02:43 UTC (rev 196)
@@ -15,6 +15,7 @@
<object source="linux_load.c"/>
<object source="sys_info.c"/>
<object source="elfload.c"/>
+ <object source="aoutload.c"/>
<object source="forthload.c"/>
<object source="loadfs.c"/>
</library>
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