From 09906111aaaa2a74e67b2483ee9dd7e0fbbddf2b Mon Sep 17 00:00:00 2001 From: Felix Held Date: Thu, 20 Apr 2023 13:22:34 +0200 Subject: [PATCH] soc/amd/common/block/acpi/tables: use get_top_of_mem_[below,above]_4gb Use get_top_of_mem_below_4gb and get_top_of_mem_above_4g instead of open-coding the functionality. Signed-off-by: Felix Held Change-Id: I35895340f6e747e2f5e1669d40f40b201d8c1845 Reviewed-on: https://review.coreboot.org/c/coreboot/+/74612 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/soc/amd/common/block/acpi/tables.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/src/soc/amd/common/block/acpi/tables.c b/src/soc/amd/common/block/acpi/tables.c index b7c942c27a..17db421831 100644 --- a/src/soc/amd/common/block/acpi/tables.c +++ b/src/soc/amd/common/block/acpi/tables.c @@ -40,7 +40,6 @@ unsigned long acpi_fill_madt_irqoverride(unsigned long current) /* Used by \_SB.PCI0._CRS */ void acpi_fill_root_complex_tom(const struct device *device) { - msr_t msr; const char *scope; assert(device); @@ -49,9 +48,8 @@ void acpi_fill_root_complex_tom(const struct device *device) assert(scope); acpigen_write_scope(scope); - msr = rdmsr(TOP_MEM); - acpigen_write_name_dword("TOM1", msr.lo); - msr = rdmsr(TOP_MEM2); + acpigen_write_name_dword("TOM1", get_top_of_mem_below_4gb()); + /* * Since XP only implements parts of ACPI 2.0, we can't use a qword * here. @@ -60,6 +58,6 @@ void acpi_fill_root_complex_tom(const struct device *device) * Shift value right by 20 bit to make it fit into 32bit, * giving us 1MB granularity and a limit of almost 4Exabyte of memory. */ - acpigen_write_name_dword("TOM2", (msr.hi << 12) | msr.lo >> 20); + acpigen_write_name_dword("TOM2", get_top_of_mem_above_4g() >> 20); acpigen_pop_len(); }