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Don't search for the RDSP at bootparams.acpi_rsdp_addr.

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This field is only used internally by the Linux kernel, so will always
be zero when bootparams is passed to us by a bootloader.
This commit is contained in:
Martin Whitaker 2022-02-27 16:21:00 +00:00
parent da7829d4c3
commit 9fca23105a
1 changed files with 1 additions and 7 deletions
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8
system/smp.c
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@ -492,13 +492,7 @@ static bool find_cpus_in_rsdp(void)
// Search for the RSDP // Search for the RSDP
rsdp_t *rp = NULL; rsdp_t *rp = NULL;
uintptr_t acpi_rsdp_addr = map_region(boot_params->acpi_rsdp_addr, 0x8, true); if (efi_info->loader_signature == EFI32_LOADER_SIGNATURE) {
if (acpi_rsdp_addr != 0) {
// Validate it
rp = scan_for_rsdp(acpi_rsdp_addr, 0x8);
if (rp) rsdp_source = "boot parameters";
}
if (rp == NULL && efi_info->loader_signature == EFI32_LOADER_SIGNATURE) {
uintptr_t system_table_addr = map_region(efi_info->sys_tab, sizeof(efi32_system_table_t), true); uintptr_t system_table_addr = map_region(efi_info->sys_tab, sizeof(efi32_system_table_t), true);
if (system_table_addr != 0) { if (system_table_addr != 0) {
rp = find_rsdp_in_efi32_system_table((efi32_system_table_t *)system_table_addr); rp = find_rsdp_in_efi32_system_table((efi32_system_table_t *)system_table_addr);