mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-24 11:59:46 +09:00
omap5: Definitions for SYS_BOOT-based fallback boot device selection
This introduces code to read the value of the SYS_BOOT pins on the OMAP5, as well as the memory-preferred scheme for the interpretation of each value. Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
This commit is contained in:
parent
94fc751d8a
commit
d1a04b32f4
@ -5,6 +5,7 @@
|
|||||||
# SPDX-License-Identifier: GPL-2.0+
|
# SPDX-License-Identifier: GPL-2.0+
|
||||||
#
|
#
|
||||||
|
|
||||||
|
obj-y += boot.o
|
||||||
obj-y += hwinit.o
|
obj-y += hwinit.o
|
||||||
obj-y += emif.o
|
obj-y += emif.o
|
||||||
obj-y += sdram.o
|
obj-y += sdram.o
|
||||||
|
46
arch/arm/cpu/armv7/omap5/boot.c
Normal file
46
arch/arm/cpu/armv7/omap5/boot.c
Normal file
@ -0,0 +1,46 @@
|
|||||||
|
/*
|
||||||
|
* OMAP5 boot
|
||||||
|
*
|
||||||
|
* Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
|
||||||
|
*
|
||||||
|
* SPDX-License-Identifier: GPL-2.0+
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <common.h>
|
||||||
|
#include <asm/io.h>
|
||||||
|
#include <asm/omap_common.h>
|
||||||
|
#include <spl.h>
|
||||||
|
|
||||||
|
static u32 boot_devices[] = {
|
||||||
|
#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
|
||||||
|
BOOT_DEVICE_MMC2,
|
||||||
|
BOOT_DEVICE_NAND,
|
||||||
|
BOOT_DEVICE_MMC1,
|
||||||
|
BOOT_DEVICE_SATA,
|
||||||
|
BOOT_DEVICE_XIP,
|
||||||
|
BOOT_DEVICE_XIP,
|
||||||
|
BOOT_DEVICE_SPI,
|
||||||
|
BOOT_DEVICE_SPI,
|
||||||
|
#else
|
||||||
|
BOOT_DEVICE_MMC2,
|
||||||
|
BOOT_DEVICE_NAND,
|
||||||
|
BOOT_DEVICE_MMC1,
|
||||||
|
BOOT_DEVICE_SATA,
|
||||||
|
BOOT_DEVICE_XIP,
|
||||||
|
BOOT_DEVICE_MMC2,
|
||||||
|
BOOT_DEVICE_XIPWAIT,
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
|
||||||
|
u32 omap_sys_boot_device(void)
|
||||||
|
{
|
||||||
|
u32 sys_boot;
|
||||||
|
|
||||||
|
/* Grab the first 4 bits of the status register for SYS_BOOT. */
|
||||||
|
sys_boot = readl((u32 *) (*ctrl)->control_status) & ((1 << 4) - 1);
|
||||||
|
|
||||||
|
if (sys_boot >= (sizeof(boot_devices) / sizeof(u32)))
|
||||||
|
return BOOT_DEVICE_NONE;
|
||||||
|
|
||||||
|
return boot_devices[sys_boot];
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user