x86: Refactor PCI to permit alternate init
We want access PCI earlier in the init sequence, so refactor the code so
that it does not require use of a BSS variable to work. This will allow us
to use early malloc() to store information about a PCI hose.
Common PCI code moves to arch/x86/cpu/pci.c and a new
board_pci_setup_hose() function is provided by boards to set up the (single)
hose used by that board.
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 6b16188..c160707 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -12,5 +12,16 @@
#define DEFINE_PCI_DEVICE_TABLE(_table) \
const struct pci_device_id _table[]
+struct pci_controller;
+
void pci_setup_type1(struct pci_controller *hose);
+
+/**
+ * board_pci_setup_hose() - Set up the PCI hose
+ *
+ * This is called by the common x86 PCI code to set up the PCI controller
+ * hose. It may be called when no memory/BSS is available so should just
+ * store things in 'hose' and not in BSS variables.
+ */
+void board_pci_setup_hose(struct pci_controller *hose);
#endif