Hello Simon,
Am 16.01.2020 um 01:10 schrieb Simon Glass:
Hi Heiko,
On Wed, 15 Jan 2020 at 23:13, Heiko Schocher <[email protected]> wrote:
Hello Simon,
Am 10.12.2019 um 13:39 schrieb Simon Glass:
Hi Heiko,
On Fri, 15 Nov 2019 at 00:28, Heiko Schocher <[email protected]> wrote:
Enable the new Kconfig option ENV_SPI_EARLY if you want
to use Environment in SPI flash before relocation.
Call env_init() and than you can use env_get_f() for
accessing Environment variables.
Signed-off-by: Heiko Schocher <[email protected]>
---
Changes in v2:
- env_sf_init_early() always return 0 now. If we do not return
0 in this function, env_set_inited() never get called,
which has the consequence that env_load/save/erase never
work, because they check if the init bit is set.
env/Kconfig | 8 ++++++
env/sf.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 89 insertions(+)
[..]
+ tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
+ CONFIG_ENV_SIZE);
+#endif
+ if (!tmp_env1 || !tmp_env2)
+ goto out;
+
+ ret = setup_flash_device();
+ if (ret)
+ goto out;
+
+ read1_fail = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
+ CONFIG_ENV_SIZE, tmp_env1);
+#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
+ read2_fail = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND,
+ CONFIG_ENV_SIZE, tmp_env2);
Hmm... if porting to "if(IS_ENABLED...)" may here is CONFIG_ENV_OFFSET_REDUND
not defined ... I will see on world build ...
OK maybe it is not in Kconfig yet?
No, both are in Kconfig, and ENV_OFFSET_REDUND depends on
SYS_REDUNDAND_ENVIRONMENT
so all should be fine.
+ ret = env_check_redund((char *)tmp_env1, read1_fail,
+ (char *)tmp_env2, read2_fail);
+
+ if ((ret == -EIO) || (ret == -ENOMSG))
Can drop extra brackets
Without this bracket I get:
/home/hs/data/Entwicklung/abb/uboot-rework/u-boot/env/sf.c: In function
‘env_sf_init_early’:
/home/hs/data/Entwicklung/abb/uboot-rework/u-boot/env/sf.c:355:20: error:
expected expression before
‘||’ token
if (ret == -EIO) || (ret == -ENOMSG)
^~
No, I mean:
if (ret == -EIO || ret == -ENOMSG)
of course, sorry for being so stupid!
+ goto err_read;
+
+ if (gd->env_valid == ENV_VALID)
+ gd->env_addr = (unsigned long)&tmp_env1->data;
+ else
+ gd->env_addr = (unsigned long)&tmp_env2->data;
+
+#else
+ if (read1_fail)
+ goto err_read;
+
+ crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) ==
+ tmp_env1->crc;
+ if (!crc1_ok)
+ goto err_read;
+
+ /* if valid -> this is our env */
+ gd->env_valid = ENV_VALID;
+ gd->env_addr = (unsigned long)&tmp_env1->data;
+#endif
+
+ return 0;
+err_read:
+ spi_flash_free(env_flash);
+ env_flash = NULL;
+ free(tmp_env1);
+#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
Unrelated to your patch, but should that be REDUNDANT?
Hmm.. currently the define is REDUNDAND ... but you are correct ...
+ free(tmp_env2);
+#endif
+out:
+ /* env is not valid. always return 0 */
+ gd->env_valid = ENV_INVALID;
+ return 0;
+}
+#endif
+
U_BOOT_ENV_LOCATION(sf) = {
.location = ENVL_SPI_FLASH,
ENV_NAME("SPI Flash")
@@ -317,5 +396,7 @@ U_BOOT_ENV_LOCATION(sf) = {
#endif
#if defined(INITENV) && defined(CONFIG_ENV_ADDR)
.init = env_sf_init,
+#elif defined(CONFIG_ENV_SPI_EARLY)
+ .init = env_sf_init_early,
#endif
It seems like we should have two drivers here, only one of which is
enabled. Perhaps for testing sandbox would want to enable both?
Alternatively I think env_sf_init() should decide which init function to call.
Ok, I can change this, but this leads into change, that we now always
call ".init" ...
in env/env.c env_init():
for (prio = 0; (drv = env_driver_lookup(ENVOP_INIT, prio)); prio++) {
if (!drv->init || !(ret = drv->init()))
env_set_inited(drv->location);
So, if env_sf_init() return 0 in case nothing ToDo, it is OK to change
this. I added a comment in env_sf_init()
Yes I think it is better to have the function decide is anything is needed.
Ok, I rework it.
Thanks for your comments!
bye,
Heiko
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