Add this information to global_data and show it with the 'bdinfo' command. For now we use CONFIG_CPU_ADDR_BITS to control the number of bits, but this could change if needed.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v2)
Changes in v2: - Add new patch to show the number of physical address bits
arch/x86/cpu/i386/cpu.c | 2 ++ arch/x86/include/asm/global_data.h | 1 + arch/x86/lib/bdinfo.c | 1 + 3 files changed, 4 insertions(+)
diff --git a/arch/x86/cpu/i386/cpu.c b/arch/x86/cpu/i386/cpu.c index 91cd5d7c9e4..5c17d279092 100644 --- a/arch/x86/cpu/i386/cpu.c +++ b/arch/x86/cpu/i386/cpu.c @@ -468,6 +468,7 @@ int x86_cpu_init_f(void) if (ll_boot_init()) setup_cpu_features(); setup_identity(); + gd->arch.phys_bits = cpu_phys_address_size(); setup_mtrr(); setup_pci_ram_top();
@@ -483,6 +484,7 @@ int x86_cpu_reinit_f(void) long addr;
setup_identity(); + gd->arch.phys_bits = cpu_phys_address_size(); setup_pci_ram_top(); addr = locate_coreboot_table(); if (addr >= 0) { diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index ea58259ad77..5b802f79d50 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -127,6 +127,7 @@ struct arch_global_data { ulong table_end; /* End address of x86 tables */ ulong table_start_high; /* Start address of high x86 tables */ ulong table_end_high; /* End address of high x86 tables */ + uint phys_bits; /* Number of physical address bits */ };
#endif diff --git a/arch/x86/lib/bdinfo.c b/arch/x86/lib/bdinfo.c index 9504e7fc293..c5fda22679a 100644 --- a/arch/x86/lib/bdinfo.c +++ b/arch/x86/lib/bdinfo.c @@ -27,6 +27,7 @@ void arch_print_bdinfo(void) bdinfo_print_num_l("table end", gd->arch.table_end); bdinfo_print_num_l(" high start", gd->arch.table_start_high); bdinfo_print_num_l(" high end", gd->arch.table_end_high); + bdinfo_print_num_l("phys bits", gd->arch.phys_bits);
if (IS_ENABLED(CONFIG_EFI_STUB)) efi_show_bdinfo();