| // SPDX-License-Identifier: GPL-2.0+ |
| * Graeme Russ, <graeme.russ@gmail.com> |
| #include <asm/global_data.h> |
| bool do_mtrr = CONFIG_IS_ENABLED(X86_32BIT_INIT) || |
| IS_ENABLED(CONFIG_FSP_VERSION2); |
| * Supported configurations: |
| * booting from slimbootloader - in that case the MTRRs are already set |
| * booting with FSPv1 - MTRRs are already set up |
| * booting with FSPv2 - MTRRs must be set here |
| * booting from coreboot - in this case there is no SPL, so we set up |
| * Note: if there is an SPL, then it has already set up MTRRs so we |
| * don't need to do that here |
| do_mtrr &= !IS_ENABLED(CONFIG_SPL) && |
| !IS_ENABLED(CONFIG_FSP_VERSION1) && |
| !IS_ENABLED(CONFIG_SYS_SLIMBOOTLOADER); |
| ret = mtrr_commit(false); |
| * If MTRR MSR is not implemented by the processor, just ignore |
| if (ret && ret != -ENOSYS) |
| /* Initialise the CPU cache(s) */ |