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https://github.com/AsahiLinux/u-boot
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cd1ee5d96e
The current condition does not handle the samus_tpl case where it sets up the RAM in SPL but needs to commit the MTRRs in U-Boot proper. Add another case to handle this and update the comment. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
46 lines
1 KiB
C
46 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2011
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* Graeme Russ, <graeme.russ@gmail.com>
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*/
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#include <common.h>
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#include <init.h>
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#include <asm/global_data.h>
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#include <linux/errno.h>
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#include <asm/mtrr.h>
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DECLARE_GLOBAL_DATA_PTR;
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int init_cache_f_r(void)
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{
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bool do_mtrr = CONFIG_IS_ENABLED(X86_32BIT_INIT) ||
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IS_ENABLED(CONFIG_FSP_VERSION2) ||
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(IS_ENABLED(CONFIG_TPL) && IS_ENABLED(CONFIG_HAVE_MRC));
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int ret;
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/*
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* Supported configurations:
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*
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* booting from slimbootloader - MTRRs are already set up
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* booting with FSPv1 - MTRRs are already set up
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* booting with FSPv2 or MRC - MTRRs must be set here
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* booting from coreboot - in this case there is no SPL, so we set up
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* the MTRRs here
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*/
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do_mtrr &= !IS_ENABLED(CONFIG_FSP_VERSION1) &&
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!IS_ENABLED(CONFIG_SYS_SLIMBOOTLOADER);
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if (do_mtrr) {
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ret = mtrr_commit(false);
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/*
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* If MTRR MSR is not implemented by the processor, just ignore
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* it
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*/
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if (ret && ret != -ENOSYS)
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return ret;
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}
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/* Initialise the CPU cache(s) */
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return init_cache();
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}
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