Commit graph

76340 commits

Author SHA1 Message Date
Ricardo Salveti
949eb228f3 arm: spl: prepare for jumping to OPTEE
Make sure to (if applicable) flush the D-cache, invalidate I-cache,
and disable MMU and caches before jumping to OPTEE.
This fixes the SDP->SPL->OPTEE boot flow on iMX6Q and most likely on
some other ARM SoCs.

Signed-off-by: Ricardo Salveti <ricardo@foundries.io>
Co-developed-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
2021-10-25 17:17:24 -04:00
Heinrich Schuchardt
a45dac1785 efi_loader: simplify tcg2_measure_secure_boot_variable()
Don't duplicate GUIDs.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-10-25 21:13:07 +02:00
Heinrich Schuchardt
02fef8b101 efi_loader: simplify efi_sigstore_parse_sigdb()
Simplify efi_sigstore_parse_sigdb() by using existing functions.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-10-25 21:13:07 +02:00
Heinrich Schuchardt
e618d1d285 efi_loader: function to get GUID for variable name
In multiple places we need the default GUID matching a variable name.
The patch provides a library function. For secure boot related variables
like 'PK', 'KEK', 'db' a lookup table is used. For all other variable
names EFI_GLOBAL_VARIABLE is returned.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-10-25 21:13:06 +02:00
Heinrich Schuchardt
d47671c631 efi_loader: treat UEFI variable name as const
UEFI variable names are typically constants and hence should be defined as
const. Unfortunately some of our API functions do not define the parameters
for UEFI variable names as const. This requires unnecessary conversions.

Adjust parameters of several internal functions to tre UEFI variable names
as const.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-10-25 21:13:06 +02:00
AKASHI Takahiro
7a6fb28c8e efi_loader: capsule: add back efi_get_public_key_data()
The commit 47a25e81d3 ("Revert "efi_capsule: Move signature from DTB to
.rodata"") failed to revert the removal of efi_get_public_key_data().

Add back this function and move it under lib/efi_loader so that other
platforms can utilize it. It is now declared as a weak function so that
it can be replaced with a platform-specific implementation.

Fixes: 47a25e81d3 ("Revert "efi_capsule: Move signature from DTB to
	.rodata"")
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-10-25 21:13:06 +02:00
AKASHI Takahiro
c5e81fddf2 Revert "Revert "doc: Update CapsuleUpdate READMEs""
This reverts commit a7e4f905d2.
The description originally written by Sughosh is still valid
even after the commit 47a25e81d3 ("Revert "efi_capsule: Move signature
from DTB to .rodata"") was applied.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
2021-10-25 21:13:06 +02:00
AKASHI Takahiro
18cfbbba1e Revert "Revert "mkeficapsule: Remove dtb related options""
This reverts commit d428e81266.
We have agreed with removing dtb-related stuff from mkeficapsule
command even if the commit 47a25e81d3 ("Revert "efi_capsule: Move
signature from DTB to .rodata"") was applied.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2021-10-25 21:13:06 +02:00
Heinrich Schuchardt
e0b56e068c .mailmap: add Heinrich Schuchardt
Add a mailmap entry for me.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-10-25 21:13:06 +02:00
Masahisa Kojima
f86352eb82 efi_loader: add missing const qualifier
This commit fixes the following compilation warning
of boottime->install_configuration_table() function.

lib/efi_selftest/efi_selftest_tcg2.c:475:46:
warning: passing argument 1 of ‘boottime->install_configuration_table’
discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  ret = boottime->install_configuration_table(&smbios_guid, dmi);

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-10-25 21:13:06 +02:00
Thomas Huth
8e7791a959 doc: Remove the obsolete README.mpc74xx file
Support for the PPC74xx processors has been removed in commit
d928664f41 ("powerpc: 74xx_7xx: remove 74xx_7xx cpu support")
more than 6 years ago already. So the corresponding README file
can now be removed, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-10-25 21:13:06 +02:00
Heinrich Schuchardt
b0f100e0f5 doc: remove AMCC PPC405 processor references
Support for PPC4XX processors has been removed. So we should not mention it
in the documentation.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
2021-10-25 21:13:06 +02:00
Marek Vasut
d11d1becbd env: mmc: Add support for redundant env in both eMMC boot partitions
Currently the MMC environment driver supports storing redundant environment
only in one eMMC partition at different offsets. This is sub-optimal, since
if this one boot partition is erased, both copies of environment are lost.
Since the eMMC has two boot partitions, add support for storing one copy of
environment in each of the two boot partitions.

To enable this functionality, select CONFIG_SYS_REDUNDAND_ENVIRONMENT to
indicate redundant environment should be used. Set CONFIG_SYS_MMC_ENV_PART
to 1 to indicate environment should be stored in eMMC boot partition. Set
CONFIG_ENV_OFFSET equal to CONFIG_ENV_OFFSET_REDUND, and both to the offset
from start of eMMC boot partition where the environment should be located.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2021-10-25 14:33:13 -04:00
Marek Vasut
c6855195e4 loads: Block writes into LMB reserved areas of U-Boot
The loads srec loading may overwrite piece of U-Boot accidentally.
Prevent that by using LMB to detect whether upcoming write would
overwrite piece of reserved U-Boot code, and if that is the case,
abort the srec loading.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-10-25 14:29:37 -04:00
Marek Vasut
f47f87f257 env: mmc: Add missing eMMC bootpart restoration to env erase
If the environment is stored in eMMC hardware boot partition, the environment
driver first stores the currently selected eMMC boot partition, then does the
requested operation, and then restores the original boot partition settings.
In case the environment operation fails, the boot partition settings are also
restored.

The 'env erase' implementation in the MMC environment driver lacks the path
which restores the boot partition. This could lead to various failure modes,
like the system boots the wrong copy of bootloader etc. Fix this by filling
in the missing restoration path.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2021-10-25 14:29:37 -04:00
Tom Rini
397b35f097 Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sunxi
- Add and enable watchdog driver
- Prepare for SYSRESET driven AXP poweroff
- Prepare for SoCs without MMC2
- Some fixes for extending SPL (SPL-DM for RISC-V)
- Some preparations for proper VBUS management
- Fix secure monitor move
2021-10-25 12:09:57 -04:00
Icenowy Zheng
c846fe43f0 mmc: sunxi: conditionally include MMC2 initialization code
Allwinner R329 has no MMC2.

Only include the code of MMC2 if the base address of it is defined.

Signed-off-by: Icenowy Zheng <icenowy@sipeed.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:54:57 +01:00
Icenowy Zheng
03510bf621 sunxi: only include alias for eMMC when mmc2 used
Some Allwinner SoCs (e.g. R329) doesn't have a MMC2 controller at all,
and on boards that we do not utilize MMC2, the alias for it is just
useless.

Only include the alias when we specify CONFIG_MMC_SUNXI_EXTRA_SLOT to 2.

Signed-off-by: Icenowy Zheng <icenowy@sipeed.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:54:50 +01:00
Samuel Holland
08bdb976b7 sunxi: dts: H616: Enable the watchdog
For some reason, the watchdog was disabled in the H616 device tree. Most
likely this is a copy-paste from the H6 device tree: the H6 watchdog is
disabled because it is broken in some chips. However, there is no
evidence of issues with the H616 watchdog.

Enable the watchdog node so it can be used by the driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:54:42 +01:00
Tom Rini
35a7677e38 u-boot-imx-20211022
-------------------
 
 CI: https://source.denx.de/u-boot/custodians/u-boot-imx/-/pipelines/9561
 
 - i.MX8:
 	- Toradex Verdin (switch to binman, cleanup, etc.)
 	- Phytec phycore_imx8mm (fixes, boot from SPI-NOR)
 	- fixes for imx8mp_evk
 - doc (i.MX): MX8MM with Fast boot
 - i.MX6:
 	- Toradex : colibri-imx6ull with eMMC, fixes
 - i.MX7ULP :
 	- preparation for OPTEE + Serial Number
 - generic:
 	- imx8m_image: Support ddr3 firmware
 -----BEGIN PGP SIGNATURE-----
 
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 bnguZGUACgkQ9PVl5Jpo76ZMQQCeO3RELcie75bMjKbazAYLcfXvmm0AniuuWM/0
 gtxxC0ObQue2LpkQMAVU
 =plVt
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Merge tag 'u-boot-imx-20211022' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx

u-boot-imx-20211022
-------------------

CI: https://source.denx.de/u-boot/custodians/u-boot-imx/-/pipelines/9561

- i.MX8:
	- Toradex Verdin (switch to binman, cleanup, etc.)
	- Phytec phycore_imx8mm (fixes, boot from SPI-NOR)
	- fixes for imx8mp_evk
- doc (i.MX): MX8MM with Fast boot
- i.MX6:
	- Toradex : colibri-imx6ull with eMMC, fixes
- i.MX7ULP :
	- preparation for OPTEE + Serial Number
- generic:
	- imx8m_image: Support ddr3 firmware
2021-10-25 09:54:36 -04:00
Samuel Holland
b147bd3607 sunxi: Enable watchdog timer support by default
A watchdog helps recover from hangs or failure to boot an OS. It can
also be used by the sysreset framework to intentionally reset the
system. Now that a driver is available, let's enable this functionality
on sunxi boards.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:54:36 +01:00
Samuel Holland
93d34faeda watchdog: Add a driver for the sunxi watchdog
This driver supports the sun4i/sun6i/sun20i watchdog timers.
They have a maximum timeout of 16 seconds.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:54:26 +01:00
Samuel Holland
e0c628d728 clk: sunxi: Extend DM_RESET selection to SPL
The sunxi clock driver exposes a reset controller, so it selects the
reset controller framework. Ensure that dependency is also satisfied
when building the driver for the SPL.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:54:06 +01:00
Andre Przywara
0ec88323da sunxi: SPL SPI: Allow larger SPL
The more recent Allwinner SoCs BootROMs can actually load SPL images
larger than 32KB. We use this on the H616 to fit the extra code needed
for the PMIC into the image, and have provisions in board.c to respect
that larger SPL size when booting from MMC.

However the sunxi SPL SPI loader has a hardcoded load offset of 32KB,
which will fail on the H616.

To fix this, use the same algorithm we use for MMC: if the SPL size is
smaller than 32KB, we use 32KB, otherwise we expect the U-Boot payload
directly after the SPL code.

This prepares for SPI booting with larger SPLs like on the H616.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-10-25 14:48:58 +01:00
Samuel Holland
95d9ffd7b6 power: pmic: axp: Implement poweroff via sysreset
The AXP PMICs have the ability to power off the system. The existing
code for this is duplicated for each PMIC variant, and uses the legacy
non-DM "pmic_bus" interface. When SYSRESET is enabled, this can all be
replaced with a sysreset device using the DM_PMIC interface.

Since the trigger bit is the same on all PMIC variants, use the register
definitions from the oldest supported PMIC.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:51:03 +01:00
Samuel Holland
830e161eb4 power: axp: Avoid do_poweroff conflict with sysreset
The sysreset uclass has an option to provide the do_poweroff() function.
When that option is enabled, the AXP power drivers should not provide
their own definition.

For the AXP305, which is paired with 64-bit systems where TF-A provides
PSCI, there is another possible conflict with the PSCI firmware driver.
This driver can be enabled even if CONFIG_PSCI_RESET is disabled, so
make sure to use the right symbol in the condition.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:50:54 +01:00
Samuel Holland
344df3ca2c include: axp_pmic: Include headers for all variants
A single DM-based driver should be able to support some feature for
several PMIC variants where the interface is the same. For example,
all PMIC variants use the same register bit to trigger poweroff.

However, currently only definitions for a single PMIC are available at
a time. This requires drivers to use #ifdefs and different indentifiers
for each variant they support.

Let's simplify this by making register definitions for all variants
available from the header. Then no preprocessor conditions are needed;
the driver can use the register definition from any variant that
supports the relevant feature.

An exception is the GPIO-related definitions, which do not use unique
identifiers. So for now, keep them like before. They will be cleaned up
along with the GPIO driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:50:42 +01:00
Samuel Holland
5b4afbd40c include: axp_pmic: Add missing header guard definition
This header attempted to avoid multiple inclusion using a header guard.
But the preprocessor symbol was never defined, so the guard had no
effect. Fix this by defining the symbol.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:50:07 +01:00
Samuel Holland
a13fa74a8e tools: mksunxiboot: Use sunxi_image header directly
When adding eGON support to mkimage, the struct boot_file_head
definition was moved to its own header. This is the only thing
mksunxiboot needed out of asm/arch/spl.h. Clean up the relative
include by switching to new header.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:49:58 +01:00
Samuel Holland
00f82fcfba sunxi: A23/A33/H3: Actually move the secure monitor
commit 1ebfc0c631 ("sunxi: A23/A33/H3: Move sun8i secure monitor to
SRAM A2") attempted to move the secure monitor to SRAM A2. But not all
sun8i SoCs have SRAM A2, so a check was put in for SUNXI_SRAM_A2_SIZE to
avoid breaking the other SoCs.

However, because the header providing SUNXI_SRAM_A2_SIZE was not
included, this unintentionally skipped the new definitions on all SoCs.
Fix this by including the right header.

Fixes: 1ebfc0c631 ("sunxi: A23/A33/H3: Move sun8i secure monitor to SRAM A2")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:49:42 +01:00
Samuel Holland
6fa41cdd19 phy: sun4i-usb: Support VBUS detection via power supply
The device tree binding provides for getting VBUS state from a device
referenced by phandle, as an optional alternative to using a GPIO. In
U-Boot, where there is no power supply class, this VBUS detection will
be implemented using a regulator device and its get_enable method.
Let's hook this up to the PHY driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:49:28 +01:00
Samuel Holland
1da7b88cad phy: sun4i-usb: Refactor VBUS detection to match Linux
The Linux driver checks the VBUS detection GPIO first; then VBUS power
supply; then finally assumes VBUS is present. When adding VBUS power
supply support, we want to match that order, so we get the same behavior
in case both a GPIO and a power supply are provided in the device tree.

So refactor the function a bit to remove the early return, and use the
same "assume VBUS is present" final fallback.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:49:16 +01:00
Samuel Holland
6617894b69 phy: sun4i-usb: Remove a couple of debug messages
Both of these messages log the GPIO number of the ID detection GPIO,
which is not terribly useful, especially in the VBUS detection function.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:49:07 +01:00
Samuel Holland
a3010bcfed sunxi: Select SPL_SEPARATE_BSS
sunxi-common.h defines CONFIG_SPL_BSS_START_ADDR to put SPL's BSS in
DRAM. Due to this, we must select SPL_SEPARATE_BSS, or else SPL will
attempt to load its DTB from the wrong address (after BSS in DRAM).

This change fixes booting with SPL_OF_CONTROL=y.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-25 14:48:58 +01:00
Tom Rini
355d1e24f6 Merge https://source.denx.de/u-boot/custodians/u-boot-spi
- Fix mtd erase with mtdpart (Marek Behún)
- NXP fspi driver fixes (Kuldeep Singh)
2021-10-23 10:49:28 -04:00
Kuldeep Singh
b9cfd8b091 spi: nxp_fspi: Implement errata workaround for LS1028A
Errata ERR050568 description says that "Flash access by FlexSPI AHB
command may not work with platform frequency equal to 300 MHz" on
LS1028A.

By default, smaller length reads(equal to RX FIFO size) are done by IP
bus and larger length reads using AHB bus. For adding errata workaround,
use IP bus to read entire flash contents and disable AHB path when
platform frequency is 300Mhz.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-10-23 15:56:47 +05:30
Kuldeep Singh
e8751a9387 spi: nxp-fspi: Add support for IP read only
Add support for disabling AHB bus and read entire flash contents via IP
bus only. Please note, this enables IP bus read using a quirk which can
be enabled directly in device-type data or in existence of an errata
where AHB bus may need to be disabled.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
2021-10-23 15:56:25 +05:30
Kris Chaplin
85886161ef mtd: spi-nor-ids: Add SECT_4K to mt25qu512a
The mt25qu512a supports 4K or 64K sectors, so adding
SECT_4K to enable 4K sector usage.

Tested on Intel n5x hardware with QSPI carrier card

Signed-off-by: Kris Chaplin <kris.chaplin@linux.intel.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
[jagan: droped Tested-by of patch author and datasheet link]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-10-23 15:54:51 +05:30
Kris Chaplin
b7a772a3bb mtd: spi-nor-ids: Add is25lp512 and is25wp512 devices
Add is25lp512 and is25wp512 devices to spi-nor id table

Tested on Intel n5x hardware with QSPI carrier card

Signed-off-by: Kris Chaplin <kris.chaplin@linux.intel.com>
[jagan: droped Tested-by of patch author]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2021-10-23 15:52:29 +05:30
Marek Behún
0d1ecc99cb mtd: Remove mtd_erase_callback() entirely
The original purpose of mtd_erase_callback() in Linux at the time it was
imported to U-Boot, was to inform the caller that erasing is done (since
it was an asynchronous operation).

All supplied callback methods in U-Boot do nothing, but the
mtd_erase_callback() function was (until previous patch) grossly abused
in U-Boot's mtdpart implementation for completely different purpose.

Since we got rid of the abusement, remove the mtd_erase_callback()
function and the .callback member from struct erase_info entirely, in
order to avoid such problems in the future.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
2021-10-23 15:47:33 +05:30
Marek Behún
a60397d219 mtd: mtdpart: Make mtdpart's _erase method sane
The _erase() method of the mtdpart driver, part_erase(), currently
implements offset shifting (for given mtdpart partition) in a weird way:
  1. part_erase() adds partition offset to block address
  2. parent driver's _erase() method is called
  3. parent driver's _erase() method calls mtd_erase_callback()
  4. mtd_erase_callback() subtracts partition offset from block address
     so that the callback function is given correct address
The problem here is that if the parent's driver does not call
mtd_erase_callback() in some scenario (this was recently a case for
spi_nor_erase(), which did not call mtd_erase_callback() at all), the
offset is not shifted back.

Moreover the code would be more readable if part_erase() not only added
partition offset before calling parent's _erase(), but also subtracted
it back afterwards. Currently the mtd_erase_callback() is expected to do
this subtracting since it does have to do it anyway.

Add the more steps to this procedure:
  5. mtd_erase_callback() adds partition offset to block address so that
     it returns the the erase_info structure members as it received them
  6. part_erase() subtracts partition offset from block address

This makes the code more logical and also prevents errors in case
parent's driver does not call mtd_erase_callback() for some reason.

(BTW, the purpose of mtd_erase_callback() in Linux is to inform the
 caller that it is done, since in Linux erasing is done asynchronously.
 We are abusing the purpose of mtd_erase_callback() in U-Boot for
 completely different purpose. The callback function itself has empty
 implementation in all cases in U-Boot.)

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Marek Behún
1fd5e67595 mtd: spi-nor-core: Check for ctrlc() in spi_nor_erase()
May it possible to interrupt the spi_nor_erase() function.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Marek Behún
ff0000b47d mtd: spi-nor-core: Call mtd_erase_callback() from spi_nor_erase()
The spi_nor_erase() function does not call mtd_erase_callback() as it
should.

The mtdpart code currently implements the subtraction of partition
offset in mtd_erase_callback().

This results in partition offset being added prior calling
spi_nor_erase(), but not subtracted back on return. The result is that
the `mtd erase` command does not erase the whole partition, only some of
it's blocks:

  => mtd erase "Rescue system"
  Erasing 0x00000000 ... 0x006fffff (1792 eraseblock(s))
  jedec_spi_nor spi-nor@0: at 0x100000, len 4096
  jedec_spi_nor spi-nor@0: at 0x201000, len 4096
  jedec_spi_nor spi-nor@0: at 0x302000, len 4096
  jedec_spi_nor spi-nor@0: at 0x403000, len 4096
  jedec_spi_nor spi-nor@0: at 0x504000, len 4096
  jedec_spi_nor spi-nor@0: at 0x605000, len 4096
  jedec_spi_nor spi-nor@0: at 0x706000, len 4096

This is obviously wrong.

Add proper calling of mtd_erase_callback() into the spi_nor_erase()
function.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reported-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Marek Behún
7398c1b758 mtd: spi-nor-core: Don't check for zero length in spi_nor_write() / spi_nor_erase()
This check is already done in all callers: mtdcore's mtd_write() /
mtd_erase(), legacy spi_nor_write() / spi_flash_erase(). No reason to do
this here as well.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
2021-10-23 15:47:33 +05:30
Marek Behún
a67b3719f3 mtd: spi-flash: Check for zero length in legacy spi_flash_*()
Check for zero length in the legacy spi_flash_read() /
spi_flash_write() / spi_flash_erase() functions.
On zero length, return 0 immediately, don't call the underlying method.

Rationale:
- these legacy functions call the _read(), _write() and _erase() methods
  of struct mtd
- the DM callers of these methods already check for zero length
- making all callers of these methods check for zero length makes it
  possible to remove the check from implementations of these _read(),
  _write() and _erase() methods

Signed-off-by: Marek Behún <marek.behun@nic.cz>
2021-10-23 15:47:33 +05:30
Marek Behún
f57277997b mtd: spi-nor-core: Check return value of write_disable() in spi_nor_erase()
The cleanup code of spi_nor_erase() function calls write_disable(), but
does not return it's return value even in case of failure. Fix this.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Marek Behún
a9d9d412e0 mtd: spi-nor-core: Don't overwrite return value if it is non-zero
The cleanup code of the spi_nor_erase() function overwrites the ret
variable with return value of clean_bar(), even if the ret variable is
already set. Fix this.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Marek Behún
5ea6dccee4 mtd: spi-nor-core: Check return value of write_enable() in spi_nor_erase()
The spi_nor_erase() function does not check return value of the
write_enable() call. Fix this.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Marek Behún
36384f612d mtd: spi-nor-core: Try cleaning up in case writing BAR failed
Use the cleanup codepath of spi_nor_erase() also in the event of failure
of writing the BAR register.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
2021-10-23 15:47:33 +05:30
Takahiro Kuwano
e66c6f1027 mtd: spi-nor: Add support for Spansion S25FL256L
The S25FL256L is a part of the S25FL-L family and has the same feature set
as S25FL128L except the density.

The datasheet can be found in the following link.
https://www.cypress.com/file/316171/download

The S25FL256L is 32MB NOR Flash that does not support Bank Address
Register. This fixup is activated if CONFIG_SPI_FLASH_BAR is enabled and
returns ENOTSUPP in setup() hook to avoid further ops.

Tested on Xilinx Zynq-7000 FPGA board.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
2021-10-23 15:38:27 +05:30