x86: acpi: Use an API to get the ACPI RSDP table address

[oweals/u-boot.git] / arch / x86 / lib / fsp / fsp_dram.c

diff --git a/arch/x86/lib/fsp/fsp_dram.c b/arch/x86/lib/fsp/fsp_dram.c
index 8b880cd59455a5d1a710fe5fab63c8f6478e1f33..1a7af576d549c55c06b930bad34eb60c3b383a44 100644 (file)
--- a/arch/x86/lib/fsp/fsp_dram.c
+++ b/arch/x86/lib/fsp/fsp_dram.c
@@ -92,5 +92,17 @@ unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
        entries[num_entries].type = E820_RESERVED;
        num_entries++;
 
+#ifdef CONFIG_HAVE_ACPI_RESUME
+       /*
+        * Everything between U-Boot's stack and ram top needs to be
+        * reserved in order for ACPI S3 resume to work.
+        */
+       entries[num_entries].addr = gd->start_addr_sp - CONFIG_STACK_SIZE;
+       entries[num_entries].size = gd->ram_top - gd->start_addr_sp + \
+               CONFIG_STACK_SIZE;
+       entries[num_entries].type = E820_RESERVED;
+       num_entries++;
+#endif
+
        return num_entries;
 }