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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2019-07-19 14:45:17 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-08-19 15:40:45 +0200 |
| commit | ffb0344b7410dddea0c7804e1a9797a802736c69 (patch) | |
| tree | 8f158b5e989fdebb0adf928aeea1a27b8e6f5491 /arch/arm/cpu/board-dt-2nd-aarch64.S | |
| parent | 7887781e0faadfa1f71a10c81475543bcfca6b22 (diff) | |
| download | barebox-ffb0344b7410dddea0c7804e1a9797a802736c69.tar.gz barebox-ffb0344b7410dddea0c7804e1a9797a802736c69.tar.xz | |
ARM: Add generic device tree 2nd stage support
This adds support for building a barebox image that boots with the
Linux ARM Kernel booting convention. Support for this image can be
enabled in Kconfig. It picks up a device tree passed in r2. This new
image helps for example with qemu. It can be started with:
qemu-system-aarch64 -m 2G -M virt -kernel images/barebox-dt-2nd.img -cpu cortex-a57 -serial stdio
or:
qemu-system-arm -m 1G -M sabrelite -kernel images/barebox-dt-2nd.img -nographic -dtb arch/arm/dts/imx6q-sabrelite.dtb
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/cpu/board-dt-2nd-aarch64.S')
| -rw-r--r-- | arch/arm/cpu/board-dt-2nd-aarch64.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/cpu/board-dt-2nd-aarch64.S b/arch/arm/cpu/board-dt-2nd-aarch64.S new file mode 100644 index 0000000000..0540a1690d --- /dev/null +++ b/arch/arm/cpu/board-dt-2nd-aarch64.S @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <linux/linkage.h> +#include <asm/barebox-arm64.h> + +ENTRY_PROC(start_dt_2nd) + adr x1, stack + mov sp, x1 + b dt_2nd_aarch64 +.word 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 +stack: +ENTRY_PROC_END(start_dt_2nd) |