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arm64: zynqmp: Setup the first boot_target at run time

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Detect mmc alias at run time for setting up proper boot_targets sequence.
The first target has to correspond with boot mode.

The purpose of this patch is to get rid of CONFIG_ZYNQ_SDHCI0/1
parameters in full U-Boot.
Unfortunately this patch can't remove it because there is missing
mmc implementation for SPL_DM_SEQ_ALIAS.

Also xilinx_zynqmp.h only setup boot commands for mmc0 and mmc1.
It means using aliases with higher number won't work. But switching
between mmc0 and mmc1 should work properly.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Michal Simek 2018-04-25 11:20:43 +02:00
parent 6189f76ae8
commit 2882b39d56
1 changed files with 35 additions and 10 deletions
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45
board/xilinx/zynqmp/zynqmp.c
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@ -15,6 +15,7 @@
#include <asm/arch/sys_proto.h>
#include <asm/arch/psu_init_gpl.h>
#include <asm/io.h>
#include <dm/device.h>
#include <dm/uclass.h>
#include <usb.h>
#include <dwc3-uboot.h>
@ -494,6 +495,9 @@ int board_late_init(void)
{
u32 reg = 0;
u8 bootmode;
struct udevice *dev;
int bootseq = -1;
int bootseq_len = 0;
int env_targets_len = 0;
const char *mode;
char *new_targets;
@ -539,7 +543,15 @@ int board_late_init(void)
break;
case SD_MODE:
puts("SD_MODE\n");
mode = "mmc0";
if (uclass_get_device_by_name(UCLASS_MMC,
"sdhci@ff160000", &dev)) {
puts("Boot from SD0 but without SD0 enabled!\n");
return -1;
}
debug("mmc0 device found at %p, seq %d\n", dev, dev->seq);
mode = "mmc";
bootseq = dev->seq;
env_set("modeboot", "sdboot");
break;
case SD1_LSHFT_MODE:
@ -547,12 +559,15 @@ int board_late_init(void)
/* fall through */
case SD_MODE1:
puts("SD_MODE1\n");
#if defined(CONFIG_ZYNQ_SDHCI0) && defined(CONFIG_ZYNQ_SDHCI1)
mode = "mmc1";
env_set("sdbootdev", "1");
#else
mode = "mmc0";
#endif
if (uclass_get_device_by_name(UCLASS_MMC,
"sdhci@ff170000", &dev)) {
puts("Boot from SD1 but without SD1 enabled!\n");
return -1;
}
debug("mmc1 device found at %p, seq %d\n", dev, dev->seq);
mode = "mmc";
bootseq = dev->seq;
env_set("modeboot", "sdboot");
break;
case NAND_MODE:
@ -566,6 +581,11 @@ int board_late_init(void)
break;
}
if (bootseq >= 0) {
bootseq_len = snprintf(NULL, 0, "%i", bootseq);
debug("Bootseq len: %x\n", bootseq_len);
}
/*
* One terminating char + one byte for space between mode
* and default boot_targets
@ -574,10 +594,15 @@ int board_late_init(void)
if (env_targets)
env_targets_len = strlen(env_targets);
new_targets = calloc(1, strlen(mode) + env_targets_len + 2);
new_targets = calloc(1, strlen(mode) + env_targets_len + 2 +
bootseq_len);
sprintf(new_targets, "%s %s", mode,
env_targets ? env_targets : "");
if (bootseq >= 0)
sprintf(new_targets, "%s%x %s", mode, bootseq,
env_targets ? env_targets : "");
else
sprintf(new_targets, "%s %s", mode,
env_targets ? env_targets : "");
env_set("boot_targets", new_targets);