Bootloader debug usually tends to be a bit dicey prior to DDR and
serial port getting active in the system. JTAG typically remains the
only practical debug option during the initial bringup.
OpenOCD is one of the most popular environment for providing debug
capability via a GDB compatible interface for developers to work with.
Debugging U-Boot and bootloaders on K3 platform does have a bit of
tribal knowledge that is better documented in our common platform
documentation.
Signed-off-by: Jason Kacines <j-kacines@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Introduce common variables to define a generic build instruction that is
then used in specific board specific description.
Labels are introduced in the evm.rst files to be then reused in variant
board documentation as well.
While at this, drop using ARCH=arm when building u-boot sources. This
practice has been discouraged for some time and can potentially create
problems with Kconfig rules related to aarch64. It's best to avoid
this approach.
Signed-off-by: Nishanth Menon <nm@ti.com>
Update the bootflow svg diagram instead of the ascii version
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
We have duplication of sources which makes it hard to sustain across the
board, but at the same time, we'd like to ensure readers get specific
information without having to cross refer to different documentation to
get piecemeal information that they need to put together.
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Now that we are using binman in all cases on these platforms, reword
things to be clearer that for filesystem booting we need to use a
specific name for each component.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Earlier documentation specified builds for generating bootloader images
using an external TI repository k3-image-gen and core-secdev-k3. Modify
this to using the binman flow so that user understands how to build the
final boot images.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
In non-combined boot flow for K3, all the firewalls are locked by default
until sysfw comes up. Rom configures some of the firewall for its usage
along with the SRAM for R5 but the PSRAM region is still locked.
The K3 MCU Scratchpad for j721e was set to a PSRAM region triggering the
firewall exception before sysfw came up. The exception started happening
after adding multi dtb support that accesses the scratchpad for reading
EEPROM contents.
The commit changes R5 MCU scratchpad for j721e to an SRAM region.
Old Map:
┌─────────────────────────────────────┐ 0x41c00000
│ SPL │
├─────────────────────────────────────┤ 0x41c40000 (approx)
│ STACK │
├─────────────────────────────────────┤ 0x41c85b20
│ Global data │
│ sizeof(struct global_data) = 0xd8 │
├─────────────────────────────────────┤ gd->malloc_base = 0x41c85bfc
│ HEAP │
│ CONFIG_SYS_MALLOC_F_LEN = 0x70000 │
├─────────────────────────────────────┤ CONFIG_SPL_BSS_START_ADDR
│ SPL BSS │ (0x41cf5bfc)
│ CONFIG_SPL_BSS_MAX_SIZE = 0xA000 │
└─────────────────────────────────────┘ CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX
(0x41cffbfc)
New Map:
┌─────────────────────────────────────┐ 0x41c00000
│ SPL │
├─────────────────────────────────────┤ 0x41c40000 (approx)
│ EMPTY │
├─────────────────────────────────────┤ 0x41c81920
│ STACK │
│ SPL_SIZE_LIMIT_PROVIDE_STACK=0x4000 │
├─────────────────────────────────────┤ 0x41c85920
│ Global data │
│ sizeof(struct global_data) = 0xd8 │
├─────────────────────────────────────┤ gd->malloc_base = 0x41c859f0
│ HEAP │
│ CONFIG_SYS_MALLOC_F_LEN = 0x70000 │
├─────────────────────────────────────┤ CONFIG_SPL_BSS_START_ADDR
│ SPL BSS │ (0x41cf59f0)
│ CONFIG_SPL_BSS_MAX_SIZE = 0xA000 │
├─────────────────────────────────────┤ 0x41cff9fc
│ NEW MCU SCRATCHPAD │
│ SYS_K3_MCU_SCRATCHPAD_SIZE = 0x200 │
└─────────────────────────────────────┘ CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX
(0x41cffbfc)
Fixes: ab977c8b91 ("configs: j721s2_evm_r5: Enable support for building multiple dtbs into FIT")
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
[n-francis@ti.com: SRAM allocation addressing diagram]
Signed-off-by: Neha Francis <n-francis@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Kamlesh Gurudasani <kamlesh@ti.com>
Texas Instruments produces quite a lot of SoCs based upon a common
architecture 'generation'. (eg: OMAP, K3) TI's existing documentation
layout makes noticing this generation jump rather difficult.
To make navigation easier, split the existing documentation into
individual SoC families so we may begin grouping them according to their
generational (eg: OMAP, K3) families.
Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
* BASH code should be labeled as such.
* Code blocks should be indented by 4 spaces.
Fix these here.
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Add documentation for loading firmwares to be used by remote cores in
the system including the environment variables that has to be set to
load the firmwares.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210721155849.20994-21-kishon@ti.com
Move j721e document from board/ti/j721e/README to
doc/board/ti/j721e_evm.rst after converting it to RST format.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210721155849.20994-20-kishon@ti.com
