From: Quentin Schulz <quentin.sch...@theobroma-systems.com>
Chances are when one boots U-Boot proper from a given storage medium,
they want the same medium to be used to load and store the environment.
This basically allows to have completely separate U-Boot (TPL/SPL/U-Boot
proper/environment) per storage medium which is convenient when working
with recovery from SD-Card as one would just need to insert a properly
configured SD-Card into the device to have access to their whole debug
setup.
No fallback mechanism is provided as to not dirty other storage medium
environment by mistake. However, since arch_env_get_location() is called
by env_init() which is part of the pre-relocation process, a valid,
non-ENVL_UNKNOWN, value shall be returned otherwise the relocation fails
with the following message:
initcall sequence 00000000002866c0 failed at call 0000000000256b34
(err=-19)
This valid, non-ENVL_UNKNOWN, value is ENVL_NOWHERE which requires to
always select CONFIG_ENV_IS_NOWHERE otherwise this work-around does not
work.
Cc: Quentin Schulz <foss+ub...@0leil.net>
Signed-off-by: Quentin Schulz <quentin.sch...@theobroma-systems.com>
---
Depends on
https://urldefense.proofpoint.com/v2/url?u=https-3A__lore.kernel.org_u-2Dboot_20220715151552.953654-2D1-2Dfoss-2Buboot-400leil.net_&d=DwIDaQ&c=_sEr5x9kUWhuk4_nFwjJtA&r=LYjLexDn7rXIzVmkNPvw5ymA1XTSqHGq8yBP6m6qZZ4njZguQhZhkI_-172IIy1t&m=TZndtGz1ePTd2Il6YcEjqzo9oXv73RCWHIRVSiFVsnp2OzyCJEDzZ2KPz56AcWdn&s=wgEMbr3EjeCtvcWU_UoXqNOwQulaVN-0Qb2yL2ysaOs&e=
https://urldefense.proofpoint.com/v2/url?u=https-3A__lore.kernel.org_u-2Dboot_20220715151552.953654-2D2-2Dfoss-2Buboot-400leil.net_&d=DwIDaQ&c=_sEr5x9kUWhuk4_nFwjJtA&r=LYjLexDn7rXIzVmkNPvw5ymA1XTSqHGq8yBP6m6qZZ4njZguQhZhkI_-172IIy1t&m=TZndtGz1ePTd2Il6YcEjqzo9oXv73RCWHIRVSiFVsnp2OzyCJEDzZ2KPz56AcWdn&s=PKwYBMB7r8ekIPV1ZG7xkj7vF60YNFlYXQRrvaVgJR8&e=
.../puma_rk3399/puma-rk3399.c | 37 +++++++++++++++++++
configs/puma-rk3399_defconfig | 1 +
2 files changed, 38 insertions(+)
diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c
b/board/theobroma-systems/puma_rk3399/puma-rk3399.c
index 5e5e58c88e..7ef4bac24b 100644
--- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c
+++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c
@@ -6,6 +6,7 @@
#include <common.h>
#include <dm.h>
#include <env.h>
+#include <env_internal.h>
#include <init.h>
#include <log.h>
#include <misc.h>
@@ -135,6 +136,42 @@ int mmc_get_env_dev(void)
return CONFIG_SYS_MMC_ENV_DEV;
}
+#if !IS_ENABLED(CONFIG_ENV_IS_NOWHERE)
+#error Please enable CONFIG_ENV_IS_NOWHERE
+#endif
+
+enum env_location arch_env_get_location(enum env_operation op, int prio)
+{
+ const char *boot_device =
+ ofnode_read_chosen_string("u-boot,spl-boot-device");
+
+ if (prio > 0)
+ return ENVL_UNKNOWN;
+
+ if (!boot_device) {
+ debug("%s: /chosen/u-boot,spl-boot-device not set\n",
+ __func__);
+ return ENVL_NOWHERE;
+ }
+
+ debug("%s: booted from %s\n", __func__, boot_device);
+
+ if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH) &&
+ !strcmp(boot_device, "/spi@ff1d0000/flash@0"))
+ return ENVL_SPI_FLASH;
+
+ if (IS_ENABLED(CONFIG_ENV_IS_IN_MMC) &&
+ (!strcmp(boot_device, "/mmc@fe320000") ||
+ !strcmp(boot_device, "/mmc@fe330000")))
+ return ENVL_MMC;
+
+ printf("%s: No environment available: booted from %s but U-Boot "
+ "config does not allow loading environment from it.",
+ __func__, boot_device);
+
+ return ENVL_NOWHERE;
+}
+
int misc_init_r(void)
{
const u32 cpuid_offset = 0x7;
diff --git a/configs/puma-rk3399_defconfig
b/configs/puma-rk3399_defconfig
index 87d7e4f57c..e218532d70 100644
--- a/configs/puma-rk3399_defconfig
+++ b/configs/puma-rk3399_defconfig
@@ -44,6 +44,7 @@ CONFIG_SPL_OF_CONTROL=y
CONFIG_OF_LIVE=y
CONFIG_OF_SPL_REMOVE_PROPS="interrupt-parent assigned-clocks
assigned-clock-rates assigned-clock-parents"
CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_NOWHERE=y
