Commit cc4ca483085c36f8316261053b385a1febde6d34
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3afecc120b
Exists in
smarc_8mq-imx_v2020.04_5.4.24_2.1.0
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MLK-18577-6 imx8: boot0: add boot header
Starting U-Boot in a XEN VM, needs a header, just like Linux Kernel. Without it, xen tool will take is as a file not supported. Signed-off-by: Peng Fan <peng.fan@nxp.com> (cherry picked from commit 344ddf76c6de808699ab742d3c11728ca62f36ee) (cherry picked from commit d260e97be35718bea46019b7ca8666e83d0b9f01) (cherry picked from commit fa6d1e299da0f6913564dcb11c171cee69a43f8e) (cherry picked from commit 2f1f8069405bdb74d811bb594cbbea3d552fa31a)
Showing 1 changed file with 17 additions and 0 deletions Inline Diff
arch/arm/include/asm/arch-imx8/boot0.h
| 1 | /* SPDX-License-Identifier: GPL-2.0+ */ | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* | 2 | /* |
| 3 | * Copyright 2019 NXP | 3 | * Copyright 2019 NXP |
| 4 | */ | 4 | */ |
| 5 | 5 | ||
| 6 | #ifdef CONFIG_XEN | ||
| 7 | add x13, x18, #0x16 | ||
| 8 | b reset | ||
| 9 | /* start of zImage header */ | ||
| 10 | .quad 0x80000 // Image load offset from start of RAM | ||
| 11 | .quad _end - _start // Effective size of kernel image | ||
| 12 | .quad 0 // Flags | ||
| 13 | .quad 0 // reserved | ||
| 14 | .quad 0 // reserved | ||
| 15 | .quad 0 // reserved | ||
| 16 | .byte 0x41 // Magic number, "ARM\x64" | ||
| 17 | .byte 0x52 | ||
| 18 | .byte 0x4d | ||
| 19 | .byte 0x64 | ||
| 20 | /* end of zImage header */ | ||
| 21 | #endif | ||
| 22 | |||
| 6 | #if defined(CONFIG_SPL_BUILD) | 23 | #if defined(CONFIG_SPL_BUILD) |
| 7 | /* | 24 | /* |
| 8 | * We use absolute address not PC relative address to jump. | 25 | * We use absolute address not PC relative address to jump. |
| 9 | * When running SPL on iMX8, the A core starts at address 0, a alias to OCRAM 0x100000, | 26 | * When running SPL on iMX8, the A core starts at address 0, a alias to OCRAM 0x100000, |
| 10 | * our linker address for SPL is from 0x100000. So using absolute address can jump to | 27 | * our linker address for SPL is from 0x100000. So using absolute address can jump to |
| 11 | * the OCRAM address from the alias. | 28 | * the OCRAM address from the alias. |
| 12 | * The alias only map first 96KB of OCRAM, so this require the SPL size can't beyond 96KB. | 29 | * The alias only map first 96KB of OCRAM, so this require the SPL size can't beyond 96KB. |
| 13 | * But when using SPL DM, the size increase significantly and may exceed 96KB. | 30 | * But when using SPL DM, the size increase significantly and may exceed 96KB. |
| 14 | * That's why we have to jump to OCRAM. | 31 | * That's why we have to jump to OCRAM. |
| 15 | */ | 32 | */ |
| 16 | 33 | ||
| 17 | ldr x0, =reset | 34 | ldr x0, =reset |
| 18 | br x0 | 35 | br x0 |
| 19 | #else | 36 | #else |
| 20 | b reset | 37 | b reset |
| 21 | #endif | 38 | #endif |
| 22 | 39 |