Re: [PATCH 1/2] net: phy: add uapi/linux/mdio.h from kernel for MDIO MMD access

On Tue, Jun 30, 2020 at 12:09:57PM +0200, Ahmad Fatoum wrote: On 6/30/20 11:49 AM, Michael Grzeschik wrote: The headerfile is used in the kernel for access of MDIO Managed Devices (MMD) indirect access. Some drivers already use those device addresses. We add the headerfile from the kernel and

Re: [PATCH 2/2] drivers: net: phy: at803x: add phy clk setup via dts

On Tue, Jun 30, 2020 at 12:15:00PM +0200, Ahmad Fatoum wrote: Hello, On 6/30/20 11:49 AM, Michael Grzeschik wrote: There are dt-bindings for the setup of the clk configuration in the phy. This patch adds support for these bindings in the driver. Signed-off-by: Michael Grzeschik ---

Re: [PATCH 1/2] net: phy: add uapi/linux/mdio.h from kernel for MDIO MMD access

On 6/30/20 11:49 AM, Michael Grzeschik wrote: > The headerfile is used in the kernel for access of MDIO Managed Devices > (MMD) indirect access. Some drivers already use those device addresses. > We add the headerfile from the kernel and change the current users to > use the defines instead >

[PATCH v2 0/2] drivers: net: phy: at803x: add clk setup with dt

This series makes the first step to remove the phy_fixups for at80xx phys, which is usually hardcoded to prepare clk, delay and SmartEEE glitch fixup. With further support of all these settings in the dts, the fixups can be removed. Michael Grzeschik (2): net: phy: add uapi/linux/mdio.h from

[PATCH v2 1/2] net: phy: add uapi/linux/mdio.h from kernel for MDIO MMD access

The headerfile is used in the kernel for access of MDIO Managed Devices (MMD) indirect access. Some drivers already use those device addresses. We add the headerfile from the kernel and change the current users to use the defines instead Reviewed-by: Ahmad Fatoum Signed-off-by: Michael Grzeschik

[PATCH v2 2/2] drivers: net: phy: at803x: add phy clk setup via dts

There are dt-bindings for the setup of the clk configuration in the phy. This patch adds support for these bindings in the driver. Reviewed-by: Ahmad Fatoum Signed-off-by: Michael Grzeschik --- v1 -> v2: - returning config_init directly with clk_out_config - removed superflous and

Re: [PATCH 2/2] drivers: net: phy: at803x: add phy clk setup via dts

Hello, On 6/30/20 11:49 AM, Michael Grzeschik wrote: > There are dt-bindings for the setup of the clk configuration in the phy. > This patch adds support for these bindings in the driver. > > Signed-off-by: Michael Grzeschik > --- > drivers/net/phy/at803x.c | 181

[PATCH 1/2] net: phy: add uapi/linux/mdio.h from kernel for MDIO MMD access

The headerfile is used in the kernel for access of MDIO Managed Devices (MMD) indirect access. Some drivers already use those device addresses. We add the headerfile from the kernel and change the current users to use the defines instead Signed-off-by: Michael Grzeschik ---

[PATCH 2/2] drivers: net: phy: at803x: add phy clk setup via dts

There are dt-bindings for the setup of the clk configuration in the phy. This patch adds support for these bindings in the driver. Signed-off-by: Michael Grzeschik --- drivers/net/phy/at803x.c | 181 +-- 1 file changed, 175 insertions(+), 6 deletions(-) diff

[PATCH 0/2] drivers: net: phy: at803x: add clk setup with dt

This series makes the first step to remove the phy_fixups for at80xx phys, which is usually hardcoded to prepare clk, delay and SmartEEE glitch fixup. With further support of all these settings in the dts, the fixups can be removed. Michael Grzeschik (2): net: phy: add uapi/linux/mdio.h from

Re: [RFC PATCH 0/4] Introduce global.bootm.root env var for booting via PARTUUID

The problem is that we want to be able to have the rootfs and kernel on separate partitions. We've looked into the Boot Loader Specification, but from what we saw, it makes A-B systems difficult (according to the spec, there can only be one "$BOOT" filesystem on a device). For reference:

[RFC PATCH 0/4] Introduce global.bootm.root env var for booting via PARTUUID

This patch introduces a new env var which specifies which device is the rootfs device to be used in Linux, passed to Linux via bootargs, identified by the rootfs partition's PARTUUID. global.bootm.root supplements global.bootm.appendroot, in that it overrides appendroot's naïve default, which

[RFC PATCH 2/4] globalvar: add bootm.root

--- common/bootm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/common/bootm.c b/common/bootm.c index af9f9b8f447d..3772fa4c2c51 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -743,6 +743,7 @@ static int bootm_init(void) globalvar_add_simple("bootm.image", NULL);

[RFC PATCH 1/4] bootm: add env var root_dev

--- common/bootm.c | 4 +++- include/bootm.h | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/common/bootm.c b/common/bootm.c index 8fec1ee34dd8..af9f9b8f447d 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -64,6 +64,7 @@ void bootm_data_init_defaults(struct bootm_data

[RFC PATCH 3/4] bootm: handle global.bootm.root

--- common/bootm.c | 6 +- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/common/bootm.c b/common/bootm.c index 3772fa4c2c51..1a9ef0673e55 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -656,7 +656,11 @@ int bootm_boot(struct bootm_data *bootm_data) if

[RFC PATCH 4/4] bootm: mount root device before accessing linux_rootarg

--- common/bootm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/common/bootm.c b/common/bootm.c index 1a9ef0673e55..b7c15cac0ba4 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -657,6 +657,8 @@ int bootm_boot(struct bootm_data *bootm_data) char *rootarg;

[PATCH] kvx: remove duplicated dtb symbols

dtb symbols (__dtb_start, __dtb_end) are already defined using RO_DATA_SECTION. This duplicated dtb section is a leftover used by Kalray internal tools to patch the dtb when loading the elf on a target. Remove it to keep only one symbol definition. Signed-off-by: Clement Leger ---

[PATCH v3 2/4] common: Kconfig: remove MIPS dependency for ELF

There is no reason anymore to limit the use of elf on mips since there is no elf specific support needed in architectures. Drop the MIPS dependency. Signed-off-by: Clement Leger --- common/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/common/Kconfig b/common/Kconfig index

[PATCH v3 0/4] kvx: add elf bootm support

This serie adds support for elf bootm support on KVX architecture. First patches are allowing to build elf support for KVX and then bootm support is added to KVX. Changes from v2 -> v3: - Rename sync_icache_dcache to sync_caches_for_execution - Keep COMPILE_TEST support for ELF Changes from v1

[PATCH v3 1/4] common: bootm: allow building with an undefined IH_ARCH

Some architectures might not want to support uImage. To do so, allow IH_ARCH to be let undefined which will make it possible to compile boot support. Signed-off-by: Clement Leger --- common/bootm.c | 2 +- include/image.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git

[PATCH v3 4/4] kvx: add support for elf loading using bootm

From: Clement Leger In order to boot elfs files, add bootm command support for kvx. This support can boot elf files using bootm elf support. initrd and device-tree handling is also included and loads them after the elf file load address. Signed-off-by: Clement Leger --- arch/kvx/Kconfig

[PATCH v3 3/4] kvx: add I-cache and D-cache synchronisation

Before booting, we must make sure the I-cache is synchronized with the D-cache to execute loaded instructions. In order to do that, add a function which execute a fence to ensure every memory accesses have been committed out of processor pipeline to memory and then invalidate I-cache to reload

Re: [PATCH v2 0/8] Module and ARM Module updates and fixes

On Mon, Jun 29, 2020 at 08:38:30PM -0400, David Dgien wrote: > This series fixes various bugs and bit-rot issues with the module > loading code. It also ports a couple of modules features from the Linux > kernel: arch specific section fixups, and module PLTs for ARM modules, > to contain veneers

Re: [PATCH v2 0/2] drivers: net: phy: at803x: add clk setup with dt

On Tue, Jun 30, 2020 at 01:06:01PM +0200, Michael Grzeschik wrote: > This series makes the first step to remove the phy_fixups for at80xx > phys, which is usually hardcoded to prepare clk, delay and SmartEEE > glitch fixup. With further support of all these settings in the dts, the > fixups can be

[PATCH 15/28] pbl: add block I/O API

We already have some PBL MCI implementations in barebox, but none are used for chainloading a barebox from a file system. There are some SoCs that would benefit from this however: At least the Zynq, AT91, SoCFPGA and TI SoCs. In preparation for supporting first stage boot on these where it's

[PATCH 16/28] fs: fat: extend for in-PBL support

The AT91 BootROM loads a boot.bin file from the first FAT partition into SRAM, when booting from MMC. To avoid the need for two barebox configurations for each of the bootloader stages, add PBL support for reading from FAT. This way each stage need only have a different PBL entry point.

[PATCH 25/28] ARM: at91: sama5d2: populate $bootsource and $bootsource_instance

The BootROM passes us information about the boot medium in r4 and we already use that in first stage and pass it along to second stage PBL already. To make use of it, we need to pass it to barebox proper, do this by writing it in the last 4 bytes of the SRAM. As second stage always run in DRAM,

[PATCH 20/28] ARM: at91: sama5d2: reuse stack set-up by first stage

Stack is always set up to end of SRAM before PBL, either by ROM code or by first stage bootloader, be it at91bootstrap or barebox in a later commit, so no need to change the stack pointer again. Signed-off-by: Ahmad Fatoum --- arch/arm/boards/sama5d27-giantboard/lowlevel.c | 13 +++--

[PATCH 11/28] ARM: at91: sama5d2: add sama5d2 matrix configuration

Different peripherals, including the SDRAM, are unusable without prior matrix configuration. Port over the necessary at91bootstrap parts for sama5d2 use. Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/Makefile | 2 +- arch/arm/mach-at91/include/mach/matrix.h| 21 +++

Re: [PATCH] startup: Fix do_autoboot_countdown() running multiple times

On Mon, Jun 29, 2020 at 10:37:43AM +0200, Ahmad Fatoum wrote: > Hi, > > On 6/26/20 8:41 AM, Sascha Hauer wrote: > > The comment above do_autoboot_countdown() states: "This function can be > > called multiple times, it is executed only the first time.". Since > > 1973892533 ("startup: don't

Re: [PATCH v3 0/4] kvx: add elf bootm support

On Tue, Jun 30, 2020 at 10:43:58PM +0200, Clement Leger wrote: > This serie adds support for elf bootm support on KVX architecture. > First patches are allowing to build elf support for KVX and then bootm > support is added to KVX. > > Changes from v2 -> v3: > - Rename sync_icache_dcache to

Re: [PATCH] kvx: remove duplicated dtb symbols

On Tue, Jun 30, 2020 at 10:53:44PM +0200, Clement Leger wrote: > dtb symbols (__dtb_start, __dtb_end) are already defined using > RO_DATA_SECTION. This duplicated dtb section is a leftover used by > Kalray internal tools to patch the dtb when loading the elf on a > target. Remove it to keep only

[PATCH 24/28] ARM: at91: sama5d2: read back memory size from DDRAM controller

We hard code memory size at three places: - In the configuration we use to initialize the DDRAM controller - In the minimal available size passed from PBL to barebox proper - In the device tree memory node override Remove the two latter ones and replace them with code that reads the size back

Re: ARM: dts: vf610-zii-dev-rev-c: Expose fiber EEPROM modules

On Sun, Jun 28, 2020 at 06:32:11PM -0700, Chris Healy wrote: > EEPROM on fiber optic modules present on Rev C ZII VF610 Dev board > can be exposed as AT24 compatible devices. Add corresponding DT nodes > needed for that. > > Signed-off-by: Chris Healy > --- Applied, thanks Sascha > diff --git

[PATCH 04/28] ARM: at91: migrate at91sam9_ddrsdr.h to use at91bootstrap's at91_ddrsdrc.h

Instead of adding missing definitions to the existing at91sam9_ddrsdr.h and adapting the incoming DDRAM initialization code from at91bootstrap, just replace the lightly used existing header with: https://github.com/linux4sam/at91bootstrap/blob/v3.8.12/include/arch/at91_ddrsdrc.h For easier

[PATCH 08/28] ARM: at91: watchdog: implement at91_wdt_disable

Board code might want to disable the watchdog in PBL and enable it later prior to boot. Provide a helper to do so. Reviewed-by: Sam Ravnborg Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/include/mach/at91_wdt.h | 16 1 file changed, 16 insertions(+) diff --git

[PATCH 21/28] at91: debug_ll: remove duplicated IS_ENABLED(CONFIG_DEBUG_LL) condition

There are three users of at91_dbgu_setup_ll and all already call this function only when IS_ENABLED(CONFIG_DEBUG_LL). Remove the duplicated condition from the function itself. This allows us to use the function for pbl_set_console use later on, even with DEBUG_LL disabled. Signed-off-by: Ahmad

[PATCH 14/28] ARM: at91: extend low level PMC driver for generic clk support

The SAMA5D2 and SAM9X60 both feature generic clocks, which we already support in barebox proper, but not in PBL. Add PBL support for setting the parent and enabling them, so we may use it to enable the SDMMC peripherals in first stage. Signed-off-by: Ahmad Fatoum ---

[PATCH 06/28] ARM: at91: import early_udelay from at91bootstrap

For use by the incoming at91bootstrap DDRAMC initialization code, this commit provides an early_udelay function usable in PBL imported from https://github.com/linux4sam/at91bootstrap/blob/v3.8.12/driver/at91_pit.c Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/Makefile |

[PATCH 18/28] ARM: at91: add code for sama5 boot source detection

SAMA5 BootROM passes information about the boot source in the r4 register. Add functions to parse these. To make use of this, entry point must back up the r4 register, because otherwise it's clobbered by local variable use. Signed-off-by: Ahmad Fatoum ---

[PATCH 02/28] ARM: at91: sama5d2: cast peripheral base addresses to __iomem pointers

The peripheral addresses should be always cast with IOMEM() anyway, so do this directly in the header to make user code less verbose. Signed-off-by: Ahmad Fatoum --- .../arm/boards/sama5d27-giantboard/lowlevel.c | 6 +- arch/arm/boards/sama5d27-som1/lowlevel.c | 14 +-

[PATCH 00/28] ARM: at91: add sama5d2 first stage support

This adapts the sama5d3 first stage patch set I sent around a few times for use on the sama5d2. Unlike the original patch set, we now do the chainloading in the PBL, so integrators can still use multi-image and don't have to build barebox more than once. With the FAT PBL implementation in place,

[PATCH 23/28] ARM: at91: sama5d27-som1: add additional first stage entry point

The BootROM constrains us to a 64K big first stage bootloader. Add a PBL entry point for a xload barebox that sets up the minimum necessary to load a FAT32 barebox.bin from the SD-Card. Signed-off-by: Ahmad Fatoum --- arch/arm/boards/sama5d27-som1/lowlevel.c | 32 +--

[PATCH 01/28] ARM: at91: remove include from assembly code

They are unused and force all headers included by it to have __ASSEMBLY__ guards for non-preprocessor code. Avoid this. Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/at91sam9_reset.S| 1 - arch/arm/mach-at91/at91sam9g45_reset.S | 1 - 2 files changed, 2 deletions(-) diff --git

[PATCH 13/28] ARM: at91: add necessary Advanced Interrupt Controller configuration

Without reconfiguration of the AIC redirection, the OS interrupt handling will misbehave later on. Add it to the SoC init. Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/Makefile | 2 +- arch/arm/mach-at91/aic.c | 28 +++

[PATCH 28/28] ARM: at91: sama5d27-giantboard: add default environment/bbu

The board only has SD-Card as storage. Add a barebox update handler to flash barebox to it, as well as an nv.boot.default=mmc1 to boot from it. Signed-off-by: Ahmad Fatoum --- arch/arm/boards/sama5d27-giantboard/Makefile| 2 ++ arch/arm/boards/sama5d27-giantboard/board.c | 17

[PATCH 03/28] ARM: at91: import at91bootstrap's at91_ddrsdrc.h

Instead of adding missing definitions to the existing at91sam9_ddrsdr.h and adapting the incoming DDRAM initialization code from at91bootstrap, just replace the lightly used existing header with: https://github.com/linux4sam/at91bootstrap/blob/v3.8.12/include/arch/at91_ddrsdrc.h For easier

[PATCH 09/28] watchdog: add support for at91sam9/sama5 watchdog

The watchdog on these SoCs is enabled by default on system boot, so a driver is especially useful. According to data sheet the mode register containing the timeout can be configured only once, but I couldn't verify this on the sama5d2. Regardless, the driver takes care not to change the mode

[PATCH 19/28] ARM: at91: add helpers for chain-loading barebox from SD-card

With PBL FAT support implemented, provide an sama5d2_sdhci_start_image helper that can be called from the PBL to chainload a barebox.bin file from the first FAT partition. Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/Kconfig | 5 ++ arch/arm/mach-at91/Makefile |

[PATCH 07/28] ARM: at91: import low level DDRAMC initialization code from at91bootstrap

This commit imports DDRAMC initialization routines for use in PBL from https://github.com/linux4sam/at91bootstrap/blob/v3.8.12/driver/ddramc.c Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/Makefile | 2 +- arch/arm/mach-at91/ddramc_ll.c | 507

[PATCH 17/28] mci: extend atmel-sdhci driver to first stage use

The BootROM resets both the SD/MMC host controller and the pin controller, but the card itself remains in transfer mode. If we redo host-side setup, we can directly read new blocks off the card. Signed-off-by: Ahmad Fatoum --- drivers/mci/Kconfig | 4 + drivers/mci/Makefile

[PATCH 10/28] ARM: at91: implement sama5d2 lowlevel init

Port over the low level initialization for sama5d2 SoCs from at91bootstrap. Signed-off-by: Ahmad Fatoum --- .../arm/boards/sama5d27-giantboard/lowlevel.c | 9 +-- arch/arm/boards/sama5d27-som1/lowlevel.c | 9 +-- arch/arm/mach-at91/Makefile | 1 +

[PATCH 22/28] ARM: at91: sama5d2: reduce UART setup boilerplate with new helpers

The sama5d2 can be fused for one of 9 preset UART iosets. This is then used by the BootROM for printing the `RomBOOT' header and for the XMODEM protocol implemented by the SAM-BA monitor. Add two new sama5d2 specific helpers: - sama5d2_dbgu_setup_ll for setting up the port with only pinmux and

[PATCH 27/28] ARM: at91: sama5d27-giantboard: add additional first stage entry point

The BootROM constrains us to a 64K big first stage bootloader. Add a PBL entry point for a xload barebox that sets up the minimum necessary to load a FAT32 barebox.bin from the SD-Card. Signed-off-by: Ahmad Fatoum --- .../arm/boards/sama5d27-giantboard/lowlevel.c | 28 +--

[PATCH 05/28] ARM: at91: replace at91sam9_ddrsdr.h with at91bootstrap's at91_ddrsdrc.h

Instead of adding missing definitions to the existing at91sam9_ddrsdr.h and adapting the incoming DDRAM initialization code from at91bootstrap, just replace the lightly used existing header with: https://github.com/linux4sam/at91bootstrap/blob/v3.8.12/include/arch/at91_ddrsdrc.h For easier

[PATCH 26/28] ARM: at91: sama5d27-som1-ek: add barebox_update and multi environment support

We now have second stage support for running from sdmmc0 and sdmmc1. Add a barebox environment and update handler for the two SD cards. As fall back, we use the environment in the QSPI flash as before as this is soldered to the SoM and is always available. Signed-off-by: Ahmad Fatoum ---

[PATCH 12/28] ARM: at91: add sama5d2 cache init

The L2 cache controller needs some initialization before use. Same goes for the CAN SRAM, do so after the MMU setup. Signed-off-by: Ahmad Fatoum --- arch/arm/mach-at91/Makefile | 1 + arch/arm/mach-at91/sama5d2.c | 52 2 files changed, 53 insertions(+)