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#include <common.h>
#include <partition.h>
#include <nand.h>
#include <init.h>
#include <driver.h>
#include <linux/mtd/mtd.h>
#include <fs.h>
#include <fcntl.h>
#include <mach/xload.h>
#include <sizes.h>
#include <filetype.h>
static void *read_image_head(const char *name)
{
void *header = xmalloc(ARM_HEAD_SIZE);
struct cdev *cdev;
int ret;
cdev = cdev_open(name, O_RDONLY);
if (!cdev) {
printf("failed to open partition\n");
return NULL;
}
ret = cdev_read(cdev, header, ARM_HEAD_SIZE, 0, 0);
cdev_close(cdev);
if (ret != ARM_HEAD_SIZE) {
printf("failed to read from partition\n");
return NULL;
}
return header;
}
static unsigned int get_image_size(void *head)
{
unsigned int ret = 0;
unsigned int *psize = head + ARM_HEAD_SIZE_OFFSET;
if (is_barebox_arm_head(head))
ret = *psize;
debug("Detected barebox image size %u\n", ret);
return ret;
}
static void *omap_xload_boot_nand(int offset)
{
int ret;
int size;
void *to, *header;
struct cdev *cdev;
devfs_add_partition("nand0", offset, SZ_1M, DEVFS_PARTITION_FIXED, "x");
dev_add_bb_dev("x", "bbx");
header = read_image_head("bbx");
if (header == NULL)
return NULL;
size = get_image_size(header);
if (!size) {
printf("failed to get image size\n");
return NULL;
}
to = xmalloc(size);
cdev = cdev_open("bbx", O_RDONLY);
if (!cdev) {
printf("failed to open nand\n");
return NULL;
}
ret = cdev_read(cdev, to, size, 0, 0);
if (ret != size) {
printf("failed to read from nand\n");
return NULL;
}
return to;
}
static void *omap_xload_boot_mmc(void)
{
int ret;
void *buf;
int len;
const char *diskdev = "disk0.0";
ret = mount(diskdev, "fat", "/");
if (ret) {
printf("Unable to mount %s (%d)\n", diskdev, ret);
return NULL;
}
buf = read_file("/barebox.bin", &len);
if (!buf) {
printf("could not read barebox.bin from sd card\n");
return NULL;
}
return buf;
}
static void *omap_xload_boot_spi(int offset)
{
int ret;
int size;
void *to, *header;
struct cdev *cdev;
devfs_add_partition("m25p0", offset, SZ_1M, DEVFS_PARTITION_FIXED, "x");
header = read_image_head("x");
if (header == NULL)
return NULL;
size = get_image_size(header);
if (!size) {
printf("failed to get image size\n");
return NULL;
}
to = xmalloc(size);
cdev = cdev_open("x", O_RDONLY);
if (!cdev) {
printf("failed to open spi flash\n");
return NULL;
}
ret = cdev_read(cdev, to, size, 0, 0);
if (ret != size) {
printf("failed to read from spi flash\n");
return NULL;
}
return to;
}
static void *omap4_xload_boot_usb(void){
int ret;
void *buf;
int len;
ret = mount("omap4_usbboot", "omap4_usbbootfs", "/");
if (ret) {
printf("Unable to mount omap4_usbbootfs (%d)\n", ret);
return NULL;
}
buf = read_file("/barebox.bin", &len);
if (!buf)
printf("could not read barebox.bin from omap4_usbbootfs\n");
return buf;
}
enum omap_boot_src omap_bootsrc(void)
{
#if defined(CONFIG_ARCH_OMAP3)
return omap3_bootsrc();
#elif defined(CONFIG_ARCH_OMAP4)
return omap4_bootsrc();
#elif defined(CONFIG_ARCH_AM33XX)
return am33xx_bootsrc();
#endif
}
/*
* Replaces the default shell in xload configuration
*/
static __noreturn int omap_xload(void)
{
int (*func)(void) = NULL;
switch (omap_bootsrc())
{
case OMAP_BOOTSRC_MMC1:
printf("booting from MMC1\n");
func = omap_xload_boot_mmc();
break;
case OMAP_BOOTSRC_USB1:
if (IS_ENABLED(CONFIG_FS_OMAP4_USBBOOT)) {
printf("booting from USB1\n");
func = omap4_xload_boot_usb();
break;
} else {
printf("booting from usb1 not enabled\n");
}
case OMAP_BOOTSRC_UNKNOWN:
printf("unknown boot source. Fall back to nand\n");
case OMAP_BOOTSRC_NAND:
printf("booting from NAND\n");
func = omap_xload_boot_nand(SZ_128K);
break;
case OMAP_BOOTSRC_SPI1:
printf("booting from SPI1\n");
func = omap_xload_boot_spi(SZ_128K);
break;
}
if (!func) {
printf("booting failed\n");
while (1);
}
shutdown_barebox();
func();
while (1);
}
static int omap_set_xload(void)
{
barebox_main = omap_xload;
return 0;
}
late_initcall(omap_set_xload);
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