cpu/x86/mtrr: add x86_setup_mtrrs_with_detect_no_above_4gb()
There's not a function that is the equivalent to x86_setup_mtrrs_with_detect() but not solving for above 4GiB. Provide x86_setup_mtrrs_with_detect_no_above_4gb() which is the equivalent to x86_setup_mtrrs_with_detect() but instructs the MTRR solver to not take into account memory above 4GiB. BUG=b:155426691 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Change-Id: Ia1b5d67d6f139aaa929e03ddbc394d57dfb949e0 Reviewed-on: https://review.coreboot.org/c/coreboot/+/41897 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -774,7 +774,7 @@ void x86_setup_var_mtrrs(unsigned int address_bits, unsigned int above4gb)
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commit_var_mtrrs(sol);
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}
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void x86_setup_mtrrs(void)
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static void _x86_setup_mtrrs(unsigned int above4gb)
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{
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int address_size;
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@ -782,14 +782,26 @@ void x86_setup_mtrrs(void)
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address_size = cpu_phys_address_size();
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printk(BIOS_DEBUG, "CPU physical address size: %d bits\n",
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address_size);
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x86_setup_var_mtrrs(address_size, above4gb);
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}
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void x86_setup_mtrrs(void)
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{
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/* Always handle addresses above 4GiB. */
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x86_setup_var_mtrrs(address_size, 1);
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_x86_setup_mtrrs(1);
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}
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void x86_setup_mtrrs_with_detect(void)
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{
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detect_var_mtrrs();
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x86_setup_mtrrs();
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/* Always handle addresses above 4GiB. */
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_x86_setup_mtrrs(1);
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}
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void x86_setup_mtrrs_with_detect_no_above_4gb(void)
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{
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detect_var_mtrrs();
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_x86_setup_mtrrs(0);
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}
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void x86_mtrr_check(void)
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@ -77,6 +77,7 @@ void x86_setup_mtrrs(void);
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* it always dynamically detects the number of variable MTRRs available.
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*/
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void x86_setup_mtrrs_with_detect(void);
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void x86_setup_mtrrs_with_detect_no_above_4gb(void);
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/*
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* x86_setup_var_mtrrs() parameters:
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* address_bits - number of physical address bits supported by cpu
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