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ARM: imx6q_logic: Fix MMC2 booting 

With the reverting of a previous change to spl_boot_device,
this board needs a new solution to determining if we're booting
from MMC1 or MMC2.

This patch creates board_boot_order function which overrides the
standard, and returns not only MMC1, or MMC2, but also can fall
back to NAND or the serial downloader should other boot options
fail.

Signed-off-by: Adam Ford <aford173@gmail.com>
This commit is contained in:
Adam Ford 2019-10-08 08:01:12 -05:00 committed by Stefano Babic
parent 63ce94b16b
commit 9fb50c68da
1 changed files with 29 additions and 0 deletions
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29
board/logicpd/imx6/imx6logic.c
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@ -207,6 +207,35 @@ struct fsl_esdhc_cfg usdhc_cfg[] = {
{USDHC2_BASE_ADDR} /* Baseboard */ {USDHC2_BASE_ADDR} /* Baseboard */
}; };
void board_boot_order(u32 *spl_boot_list)
{
struct src *psrc = (struct src *)SRC_BASE_ADDR;
unsigned int reg = readl(&psrc->sbmr1) >> 11;
/*
* Upon reading BOOT_CFG register the following map is done:
* Bit 11 and 12 of BOOT_CFG register can determine the current
* mmc port
* 0x1 SD1-SOM
* 0x2 SD2-Baseboard
*/
reg &= 0x3; /* Only care about bottom 2 bits */
switch (reg) {
case 0:
spl_boot_list[0] = BOOT_DEVICE_MMC1;
break;
case 1:
spl_boot_list[0] = BOOT_DEVICE_MMC2;
break;
}
/* If we cannot find a valid MMC/SD card, try NAND */
spl_boot_list[1] = BOOT_DEVICE_NAND;
/* As a last resort, use serial downloader */
spl_boot_list[2] = BOOT_DEVICE_BOARD;
}
int board_mmc_init(bd_t *bis) int board_mmc_init(bd_t *bis)
{ {
struct src *psrc = (struct src *)SRC_BASE_ADDR; struct src *psrc = (struct src *)SRC_BASE_ADDR;