Add support for reserving initial memory.
Signed-off-by: Simon Glass <s...@chromium.org>
---
arch/x86/cpu/cpu.c | 41 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 40 insertions(+), 1 deletion(-)
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index 8fa6953588..893bec5c5c 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -254,7 +254,7 @@ int cpu_init_r(void)
}
#ifndef CONFIG_EFI_STUB
-int reserve_arch(void)
+static int cpu_x86_reserve_arch(void)
{
#ifdef CONFIG_ENABLE_MRC_CACHE
mrccache_reserve();
@@ -266,4 +266,43 @@ int reserve_arch(void)
return 0;
}
+
+#ifndef CONFIG_BOARD_ENABLE
+int reserve_arch(void)
+{
+ return cpu_x86_reserve_arch();
+}
+#endif
+
+#endif /* !CONFIG_EFI_STUB */
+
+static int cpu_x86_phase(struct udevice *dev, enum board_phase_t phase)
+{
+#ifndef CONFIG_EFI_STUB
+ return cpu_x86_reserve_arch();
+#else
+ return 0;
#endif
+}
+
+static int cpu_x86_board_probe(struct udevice *dev)
+{
+ return board_support_phase(dev, BOARD_F_RESERVE_ARCH);
+}
+
+static const struct board_ops cpu_x86_board_ops = {
+ .phase = cpu_x86_phase,
+};
+
+/* Name this starting with underscore so it will be called last */
+U_BOOT_DRIVER(_cpu_x86_board_drv) = {
+ .name = "cpu_x86_board",
+ .id = UCLASS_BOARD,
+ .ops = &cpu_x86_board_ops,
+ .probe = cpu_x86_board_probe,
+ .flags = DM_FLAG_PRE_RELOC,
+};
+
+U_BOOT_DEVICE(cpu_x86_board) = {
+ .name = "cpu_x86_board",
+};
--
2.12.0.367.g23dc2f6d3c-goog
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