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authorHollis Blanchard <hollis@penguinppc.org>2010-08-04 17:21:37 -0700
committerAlexander Graf <agraf@suse.de>2010-08-26 18:18:26 +0200
commitceee6da6cff11cea77ed2169a37d27cfc62a3c22 (patch)
treeb4340c1f351b0c596b4b6535558ecaf23329a4c3 /hw/ppc440_bamboo.c
parenta86299e53b77bfd9f80bfeb22f30e36b25233e5b (diff)
ppc4xx: load Bamboo kernel, initrd, and fdt at fixed addresses
We can't use the return value of load_uimage() for the kernel because it can't account for BSS size, and the PowerPC kernel does not relocate blobs before zeroing BSS. Instead, we now load at the fixed addresses chosen by u-boot (the normal firmware for the board). Signed-off-by: Hollis Blanchard <hollis@penguinppc.org>
Diffstat (limited to 'hw/ppc440_bamboo.c')
-rw-r--r--hw/ppc440_bamboo.c39
1 files changed, 18 insertions, 21 deletions
diff --git a/hw/ppc440_bamboo.c b/hw/ppc440_bamboo.c
index d471d5df77..34ddf45477 100644
--- a/hw/ppc440_bamboo.c
+++ b/hw/ppc440_bamboo.c
@@ -27,6 +27,11 @@
#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
+/* from u-boot */
+#define KERNEL_ADDR 0x1000000
+#define FDT_ADDR 0x1800000
+#define RAMDISK_ADDR 0x1900000
+
static int bamboo_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
@@ -98,10 +103,8 @@ static void bamboo_init(ram_addr_t ram_size,
uint64_t elf_lowaddr;
target_phys_addr_t entry = 0;
target_phys_addr_t loadaddr = 0;
- target_long kernel_size = 0;
- target_ulong initrd_base = 0;
target_long initrd_size = 0;
- target_ulong dt_base = 0;
+ int success;
int i;
/* Setup CPU. */
@@ -118,15 +121,15 @@ static void bamboo_init(ram_addr_t ram_size,
/* Load kernel. */
if (kernel_filename) {
- kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
- if (kernel_size < 0) {
- kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
- &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
+ success = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
+ if (success < 0) {
+ success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
+ &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
loadaddr = elf_lowaddr;
}
/* XXX try again as binary */
- if (kernel_size < 0) {
+ if (success < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
@@ -135,26 +138,20 @@ static void bamboo_init(ram_addr_t ram_size,
/* Load initrd. */
if (initrd_filename) {
- initrd_base = kernel_size + loadaddr;
- initrd_size = load_image_targphys(initrd_filename, initrd_base,
- ram_size - initrd_base);
+ initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
+ ram_size - RAMDISK_ADDR);
if (initrd_size < 0) {
- fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
- initrd_filename);
+ fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n",
+ initrd_filename, RAMDISK_ADDR);
exit(1);
}
}
/* If we're loading a kernel directly, we must load the device tree too. */
if (kernel_filename) {
- if (initrd_base)
- dt_base = initrd_base + initrd_size;
- else
- dt_base = kernel_size + loadaddr;
-
- if (bamboo_load_device_tree(dt_base, ram_size,
- initrd_base, initrd_size, kernel_cmdline) < 0) {
+ if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR,
+ initrd_size, kernel_cmdline) < 0) {
fprintf(stderr, "couldn't load device tree\n");
exit(1);
}
@@ -163,7 +160,7 @@ static void bamboo_init(ram_addr_t ram_size,
/* Set initial guest state. */
env->gpr[1] = (16<<20) - 8;
- env->gpr[3] = dt_base;
+ env->gpr[3] = FDT_ADDR;
env->nip = entry;
/* XXX we currently depend on KVM to create some initial TLB entries. */
}