Merge branch 'next' of https://gitlab.denx.de/u-boot/custodians/u-boot-x86 into next

- Enhance the 'zboot' command to be more like 'bootm' with sub-commands
- The last series of ACPI core changes for programmatic generation of
  ACPI tables
- Add all required ACPI tables for ApolloLake and enable ACPIGEN on
  Chromebook Coral
- A feature minor enhancements to the 'hob' command
- Intel edison: Support for writing an xFSTK image via binman

1 files changed, 23 insertions, 0 deletions

diff --git a/arch/x86/cpu/i386/cpu.c b/arch/x86/cpu/i386/cpu.c
index 8f342dd06e2..7517b756f43 100644
--- a/arch/x86/cpu/i386/cpu.c
+++ b/arch/x86/cpu/i386/cpu.c
@@ -34,6 +34,10 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define CPUID_FEATURE_PAE	BIT(6)
+#define CPUID_FEATURE_PSE36	BIT(17)
+#define CPUID_FEAURE_HTT	BIT(28)
+
 /*
  * Constructor for a conventional segment GDT (or LDT) entry
  * This is a macro so it can be used in initialisers
@@ -388,6 +392,25 @@ static void setup_identity(void)
 	}
 }
 
+static uint cpu_cpuid_extended_level(void)
+{
+	return cpuid_eax(0x80000000);
+}
+
+int cpu_phys_address_size(void)
+{
+	if (!has_cpuid())
+		return 32;
+
+	if (cpu_cpuid_extended_level() >= 0x80000008)
+		return cpuid_eax(0x80000008) & 0xff;
+
+	if (cpuid_edx(1) & (CPUID_FEATURE_PAE | CPUID_FEATURE_PSE36))
+		return 36;
+
+	return 32;
+}
+
 /* Don't allow PCI region 3 to use memory in the 2-4GB memory hole */
 static void setup_pci_ram_top(void)
 {