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https://github.com/brain-hackers/u-boot-brain
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9a2738581a
When running SPL on iMX8, the A core starts at address 0 which is a alias to OCRAM 0x100000. The alias only map first 96KB of OCRAM, so this require the SPL size can't beyond 96KB. But when using SPL DM, the size increase significantly and may exceed 96KB. So to fix the problem, we will change SPL linker address to OCRAM address 0x100000. And then jump to the absolute address not the PC relative address for entering OCRAM. Signed-off-by: Ye Li <ye.li@nxp.com> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
22 lines
643 B
C
22 lines
643 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2019 NXP
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*/
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#if defined(CONFIG_SPL_BUILD)
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/*
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* We use absolute address not PC relative address to jump.
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* When running SPL on iMX8, the A core starts at address 0, a alias to OCRAM 0x100000,
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* our linker address for SPL is from 0x100000. So using absolute address can jump to
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* the OCRAM address from the alias.
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* The alias only map first 96KB of OCRAM, so this require the SPL size can't beyond 96KB.
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* But when using SPL DM, the size increase significantly and may exceed 96KB.
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* That's why we have to jump to OCRAM.
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*/
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ldr x0, =reset
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br x0
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#else
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b reset
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#endif
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