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authorSimon Glass <sjg@chromium.org>2014-11-12 22:42:12 -0700
committerSimon Glass <sjg@chromium.org>2014-11-21 07:34:12 +0100
commit7430f1086429fa93e80c3951baac90e1c578898a (patch)
tree2bf3d1f5cdf7de4b77166eb8d4455bc8c4ebd9ee /arch/x86/cpu/pci.c
parentd188b18f65417a0a6698c43926e3c66b134195b8 (diff)
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x86: Support use of PCI before relocation
Add support for using PCI before SDRAM is available, using early malloc() and global_data. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/cpu/pci.c')
-rw-r--r--arch/x86/cpu/pci.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86/cpu/pci.c b/arch/x86/cpu/pci.c
index 0741dc2..2d8f16c 100644
--- a/arch/x86/cpu/pci.c
+++ b/arch/x86/cpu/pci.c
@@ -10,15 +10,36 @@
*/
#include <common.h>
+#include <errno.h>
+#include <malloc.h>
#include <pci.h>
#include <asm/pci.h>
static struct pci_controller x86_hose;
+int pci_early_init_hose(struct pci_controller **hosep)
+{
+ struct pci_controller *hose;
+
+ hose = calloc(1, sizeof(struct pci_controller));
+ if (!hose)
+ return -ENOMEM;
+
+ board_pci_setup_hose(hose);
+ pci_setup_type1(hose);
+ gd->arch.hose = hose;
+ *hosep = hose;
+
+ return 0;
+}
+
void pci_init_board(void)
{
struct pci_controller *hose = &x86_hose;
+ /* Stop using the early hose */
+ gd->arch.hose = NULL;
+
board_pci_setup_hose(hose);
pci_setup_type1(hose);
pci_register_hose(hose);