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>
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index c160707..6e70a99 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -24,4 +24,13 @@
* store things in 'hose' and not in BSS variables.
*/
void board_pci_setup_hose(struct pci_controller *hose);
+
+/**
+ * pci_early_init_hose() - Set up PCI host before relocation
+ *
+ * This allocates memory for, sets up and returns the PCI hose. It can be
+ * called before relocation. The hose will be stored in gd->arch.hose for
+ * later use, but will become invalid one DRAM is available.
+ */
+int pci_early_init_hose(struct pci_controller **hosep);
#endif