mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-30 19:32:16 +00:00
9ef89ea9b0
Add basic i.MX8ULP support For the MMU part, Using a simple way the calculate the MMU size to avoid default heavy calcaulation. And align address and size in the table settings to 2MB or 4GB as much as possible. So we can reduce the 4K page allocations in MMU table which will spends much time in create the page table Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
32 lines
557 B
ArmAsm
32 lines
557 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2020 NXP
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*/
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#include <config.h>
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.align 8
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.global rom_pointer
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rom_pointer:
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.space 256
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/*
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* Routine: save_boot_params (called after reset from start.S)
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*/
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.global save_boot_params
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save_boot_params:
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/* The firmware provided ATAG/FDT address can be found in r2/x0 */
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adr x0, rom_pointer
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stp x1, x2, [x0], #16
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stp x3, x4, [x0], #16
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/* Returns */
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b save_boot_params_ret
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.global restore_boot_params
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restore_boot_params:
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adr x0, rom_pointer
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ldp x1, x2, [x0], #16
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ldp x3, x4, [x0], #16
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ret
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