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| author | Andre Przywara <andre.przywara@arm.com> | 2022-03-04 19:30:11 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-04-01 21:55:38 +0300 |
| commit | c0fce929564f996f6f21418827c48519eb79d1b6 (patch) | |
| tree | 6170d97b72a1e2d7b37144f1ec98d1dc4854c0a6 /board/armltd | |
| parent | 71fa41ebfc3f247f5f2654045713242830fde471 (diff) | |
| download | u-boot-c0fce929564f996f6f21418827c48519eb79d1b6.tar.xz | |
vexpress64: fvp: enable OF_CONTROL
The FVP base model is relying on a DT for Linux operation, so there is
no reason we would need to rely on hardcoded information for U-Boot.
Letting U-Boot use a DT will open up the usage of actual peripherals,
beyond the support for semihosting only.
Enable OF_CONTROL in the Kconfig, and use the latest dts files from
Linux. Depending on whether we use the boot-wrapper or TF-A, there is
already a DTB provided or not, respectively.
To cover the boot-wrapper, we add an arm64 Linux kernel header, which
allows the boot-wrapper to treat U-Boot like a Linux kernel. U-Boot will
find the pointer to the DTB in x0, and will use it.
Even though TF-A carries a DT, at the moment this is not made available
to non-secure world, so to not break users, we use the U-Boot provided
DTB copy in that case. For some reason TF-A puts some DT like structure
at the address x0 is pointing at, but that is very small and doesn't
carry any hardware information. Make the code to ignore those small DTBs.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'board/armltd')
| -rw-r--r-- | board/armltd/vexpress64/Kconfig | 8 | ||||
| -rw-r--r-- | board/armltd/vexpress64/vexpress64.c | 8 |
2 files changed, 13 insertions, 3 deletions
diff --git a/board/armltd/vexpress64/Kconfig b/board/armltd/vexpress64/Kconfig index 55fe0118e1..34126446a7 100644 --- a/board/armltd/vexpress64/Kconfig +++ b/board/armltd/vexpress64/Kconfig @@ -15,13 +15,14 @@ choice config TARGET_VEXPRESS64_BASE_FVP bool "Support Versatile Express ARMv8a FVP BASE model" select SEMIHOSTING + select LINUX_KERNEL_IMAGE_HEADER + select POSITION_INDEPENDENT + select OF_BOARD config TARGET_VEXPRESS64_JUNO bool "Support Versatile Express Juno Development Platform" select DM_ETH select USB - select OF_CONTROL - select CLK select BLK imply OF_HAS_PRIOR_STAGE @@ -34,4 +35,7 @@ config JUNO_DTB_PART The ARM partition name in the NOR flash memory holding the device tree blob to configure U-Boot. +config LNX_KRNL_IMG_TEXT_OFFSET_BASE + default SYS_TEXT_BASE + endif diff --git a/board/armltd/vexpress64/vexpress64.c b/board/armltd/vexpress64/vexpress64.c index 5e22e89824..7d5e5516f9 100644 --- a/board/armltd/vexpress64/vexpress64.c +++ b/board/armltd/vexpress64/vexpress64.c @@ -168,11 +168,17 @@ void *board_fdt_blob_setup(int *err) } #endif - if (fdt_magic(prior_stage_fdt_address) == FDT_MAGIC) { + if (fdt_magic(prior_stage_fdt_address) == FDT_MAGIC && + fdt_totalsize(prior_stage_fdt_address) > 0x100) { *err = 0; return (void *)prior_stage_fdt_address; } + if (fdt_magic(gd->fdt_blob) == FDT_MAGIC) { + *err = 0; + return (void *)gd->fdt_blob; + } + *err = -ENXIO; return NULL; } |