static int omap_init(void)
{
int ret;
struct device_node *root;
root = of_get_root_node();
if (root) {
__omap_cpu_type = omap_soc_from_dt();
if (!__omap_cpu_type)
hang();
}
if (cpu_is_omap3())
ret = omap3_init();
else if (cpu_is_omap4())
ret = omap4_init();
else if (cpu_is_am33xx())
ret = am33xx_init();
else
return -EINVAL;
if (root)
return ret;
if (cpu_is_omap3())
ret = omap3_devices_init();
else if (cpu_is_omap4())
ret = omap4_devices_init();
else if (cpu_is_am33xx())
ret = am33xx_devices_init();
else
return -EINVAL;
return ret;
}
/*
* Replaces the default shell in xload configuration
*/
static __noreturn int omap_xload(void)
{
void *func;
if (!barebox_part)
barebox_part = &default_part;
switch (bootsource_get())
{
case BOOTSOURCE_MMC:
printf("booting from MMC\n");
func = omap_xload_boot_mmc();
break;
case BOOTSOURCE_USB:
if (IS_ENABLED(CONFIG_OMAP3_USBBOOT) && cpu_is_omap3()) {
printf("booting from USB\n");
func = omap3_xload_boot_usb();
} else if (IS_ENABLED(CONFIG_FS_OMAP4_USBBOOT)) {
printf("booting from USB\n");
func = omap4_xload_boot_usb();
} else {
printf("booting from USB not enabled\n");
func = NULL;
}
break;
case BOOTSOURCE_NAND:
printf("booting from NAND\n");
func = omap_xload_boot_nand(barebox_part);
break;
case BOOTSOURCE_SPI:
printf("booting from SPI\n");
func = omap_xload_boot_spi(barebox_part);
break;
case BOOTSOURCE_SERIAL:
if (IS_ENABLED(CONFIG_OMAP_SERIALBOOT)) {
printf("booting from serial\n");
func = omap_serial_boot();
break;
}
case BOOTSOURCE_NET:
if (IS_ENABLED(CONFIG_AM33XX_NET_BOOT)) {
printf("booting from NET\n");
func = am33xx_net_boot();
break;
} else {
printf("booting from network not enabled\n");
}
default:
printf("unknown boot source. Fall back to nand\n");
func = omap_xload_boot_nand(barebox_part);
break;
}
if (!func) {
printf("booting failed\n");
while (1);
}
omap_start_barebox(func);
}
static void *omap_scratch_space_start(void)
{
if (cpu_is_am33xx())
return (void *)AM33XX_SRAM_SCRATCH_SPACE;
if (cpu_is_omap3())
return (void *)OMAP3_SRAM_SCRATCH_SPACE;
if (cpu_is_omap4())
return (void *)OMAP44XX_SRAM_SCRATCH_SPACE;
return NULL;
}
static void *omap_sram_start(void)
{
if (cpu_is_am33xx())
return (void *)AM33XX_SRAM0_START;
if (cpu_is_omap3())
return (void *)OMAP3_SRAM_BASE;
if (cpu_is_omap4())
return (void *)OMAP44XX_SRAM_BASE;
return NULL;
}
void __noreturn reset_cpu(unsigned long addr)
{
if (cpu_is_omap3())
omap3_reset_cpu(addr);
if (cpu_is_omap4())
omap4_reset_cpu(addr);
if (cpu_is_am33xx())
am33xx_reset_cpu(addr);
while (1);
}
