x86: Add DSDT table for supporting ACPI on QEMU

[u-boot] / arch / x86 / cpu / start.S

diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S
index e94ddc45ddb78475eefa3e306b9f352d1f378755..d072825bcdd92f304689fb46a9d580238b9dc04f 100644 (file)
--- a/arch/x86/cpu/start.S
+++ b/arch/x86/cpu/start.S
@@ -115,8 +115,10 @@ car_init_ret:
 #endif
 #else
        /*
-        * When we get here after car_init(), esp points to a temporary stack
-        * and esi holds the HOB list address returned by the FSP.
+        * U-Boot enters here twice. For the first time it comes from
+        * car_init_done() with esp points to a temporary stack and esi
+        * set to zero. For the second time it comes from fsp_init_done()
+        * with esi holding the HOB list address returned by the FSP.
         */
 #endif
        /* Set up global data */
@@ -141,6 +143,14 @@ car_init_ret:
        jz      skip_hob
        movl    %esi, GD_HOB_LIST(%edx)
 
+       /*
+        * After fsp_init() returns, the stack has already been switched to a
+        * place within system memory as defined by CONFIG_FSP_TEMP_RAM_ADDR.
+        * Enlarge the size of malloc() pool before relocation since we have
+        * plenty of memory now.
+        */
+       subl    $CONFIG_FSP_SYS_MALLOC_F_LEN, %esp
+       movl    %esp, GD_MALLOC_BASE(%edx)
 skip_hob:
 #else
        /* Store table pointer */