mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-17 02:03:21 +09:00
cfac375616
This introduces code to read the value of the SYS_BOOT pins on the OMAP3, as well as the memory-preferred scheme for the interpretation of each value. Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/*
|
|
* OMAP3 boot
|
|
*
|
|
* Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <spl.h>
|
|
|
|
static u32 boot_devices[] = {
|
|
BOOT_DEVICE_ONENAND,
|
|
BOOT_DEVICE_NAND,
|
|
BOOT_DEVICE_ONENAND,
|
|
BOOT_DEVICE_MMC2,
|
|
BOOT_DEVICE_ONENAND,
|
|
BOOT_DEVICE_MMC2,
|
|
BOOT_DEVICE_MMC1,
|
|
BOOT_DEVICE_XIP,
|
|
BOOT_DEVICE_XIPWAIT,
|
|
BOOT_DEVICE_MMC2,
|
|
BOOT_DEVICE_XIP,
|
|
BOOT_DEVICE_XIPWAIT,
|
|
BOOT_DEVICE_NAND,
|
|
BOOT_DEVICE_XIP,
|
|
BOOT_DEVICE_XIPWAIT,
|
|
BOOT_DEVICE_NAND,
|
|
BOOT_DEVICE_ONENAND,
|
|
BOOT_DEVICE_MMC2,
|
|
BOOT_DEVICE_MMC1,
|
|
BOOT_DEVICE_XIP,
|
|
BOOT_DEVICE_XIPWAIT,
|
|
BOOT_DEVICE_NAND,
|
|
BOOT_DEVICE_ONENAND,
|
|
BOOT_DEVICE_MMC2,
|
|
BOOT_DEVICE_MMC1,
|
|
BOOT_DEVICE_XIP,
|
|
BOOT_DEVICE_XIPWAIT,
|
|
BOOT_DEVICE_NAND,
|
|
BOOT_DEVICE_MMC2_2,
|
|
};
|
|
|
|
u32 omap_sys_boot_device(void)
|
|
{
|
|
struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
|
|
u32 sys_boot;
|
|
|
|
/* Grab the first 5 bits of the status register for SYS_BOOT. */
|
|
sys_boot = readl(&ctrl_base->status) & ((1 << 5) - 1);
|
|
|
|
if (sys_boot >= (sizeof(boot_devices) / sizeof(u32)))
|
|
return BOOT_DEVICE_NONE;
|
|
|
|
return boot_devices[sys_boot];
|
|
}
|