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Wean device tree code off phys_ram_base.

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Signed-off-by: Paul Brook <paul@codesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7068 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2009-04-10 16:23:59 +00:00
parent 5c130f659b
commit 7ec632b45c
4 changed files with 31 additions and 25 deletions
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36
device_tree.c
View File

@ -25,34 +25,35 @@
#include <libfdt.h>
void *load_device_tree(const char *filename_path, void *load_addr)
void *load_device_tree(const char *filename_path, int *sizep)
{
int dt_file_size;
int dt_size;
int dt_file_load_size;
int new_dt_size;
int ret;
void *dt_file = NULL;
void *fdt;
void *fdt = NULL;
dt_file_size = get_image_size(filename_path);
if (dt_file_size < 0) {
*sizep = 0;
dt_size = get_image_size(filename_path);
if (dt_size < 0) {
printf("Unable to get size of device tree file '%s'\n",
filename_path);
goto fail;
}
/* Expand to 2x size to give enough room for manipulation. */
dt_size *= 2;
/* First allocate space in qemu for device tree */
dt_file = qemu_mallocz(dt_file_size);
fdt = qemu_mallocz(dt_size);
dt_file_load_size = load_image(filename_path, dt_file);
dt_file_load_size = load_image(filename_path, fdt);
if (dt_file_load_size < 0) {
printf("Unable to open device tree file '%s'\n",
filename_path);
goto fail;
}
/* Second we place new copy of 2x size in guest memory
* This give us enough room for manipulation.
*/
new_dt_size = dt_file_size * 2;
fdt = load_addr;
ret = fdt_open_into(dt_file, fdt, new_dt_size);
ret = fdt_open_into(fdt, fdt, dt_size);
if (ret) {
printf("Unable to copy device tree in memory\n");
goto fail;
@ -64,12 +65,11 @@ void *load_device_tree(const char *filename_path, void *load_addr)
filename_path);
goto fail;
}
/* free qemu memory with old device tree */
qemu_free(dt_file);
*sizep = dt_size;
return fdt;
fail:
qemu_free(dt_file);
qemu_free(fdt);
return NULL;
}

2
device_tree.h
View File

@ -14,7 +14,7 @@
#ifndef __DEVICE_TREE_H__
#define __DEVICE_TREE_H__
void *load_device_tree(const char *filename_path, void *load_addr);
void *load_device_tree(const char *filename_path, int *sizep);
int qemu_devtree_setprop(void *fdt, const char *node_path,
const char *property, uint32_t *val_array, int size);

9
hw/ppc440_bamboo.c
View File

@ -27,7 +27,7 @@
#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
static void *bamboo_load_device_tree(void *addr,
static void *bamboo_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
@ -37,6 +37,7 @@ static void *bamboo_load_device_tree(void *addr,
#ifdef HAVE_FDT
uint32_t mem_reg_property[] = { 0, 0, ramsize };
char *path;
int fdt_size;
int pathlen;
int ret;
@ -45,7 +46,7 @@ static void *bamboo_load_device_tree(void *addr,
snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
fdt = load_device_tree(path, addr);
fdt = load_device_tree(path, &fdt_size);
free(path);
if (fdt == NULL)
goto out;
@ -75,6 +76,8 @@ static void *bamboo_load_device_tree(void *addr,
if (kvm_enabled())
kvmppc_fdt_update(fdt);
cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
out:
#endif
@ -165,7 +168,7 @@ static void bamboo_init(ram_addr_t ram_size, int vga_ram_size,
else
dt_base = kernel_size + loadaddr;
fdt = bamboo_load_device_tree(phys_ram_base + dt_base, ram_size,
fdt = bamboo_load_device_tree(dt_base, ram_size,
initrd_base, initrd_size, kernel_cmdline);
if (fdt == NULL) {
fprintf(stderr, "couldn't load device tree\n");

9
hw/ppce500_mpc8544ds.c
View File

@ -71,7 +71,7 @@ out:
}
#endif
static void *mpc8544_load_device_tree(void *addr,
static void *mpc8544_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
@ -81,6 +81,7 @@ static void *mpc8544_load_device_tree(void *addr,
#ifdef HAVE_FDT
uint32_t mem_reg_property[] = {0, ramsize};
char *path;
int fdt_size;
int pathlen;
int ret;
@ -89,7 +90,7 @@ static void *mpc8544_load_device_tree(void *addr,
snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
fdt = load_device_tree(path, addr);
fdt = load_device_tree(path, &fdt_size);
qemu_free(path);
if (fdt == NULL)
goto out;
@ -142,6 +143,8 @@ static void *mpc8544_load_device_tree(void *addr,
mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
}
cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
out:
#endif
@ -259,7 +262,7 @@ static void mpc8544ds_init(ram_addr_t ram_size, int vga_ram_size,
/* If we're loading a kernel directly, we must load the device tree too. */
if (kernel_filename) {
fdt = mpc8544_load_device_tree(phys_ram_base + dt_base, ram_size,
fdt = mpc8544_load_device_tree(dt_base, ram_size,
initrd_base, initrd_size, kernel_cmdline);
if (fdt == NULL) {
fprintf(stderr, "couldn't load device tree\n");