x86: Support QEMU x86 targets
This commit introduces the initial U-Boot support for QEMU x86 targets.
U-Boot can boot from coreboot as a payload, or directly without coreboot.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Merged in patch 'x86: qemu: Add CMD_NET to qemu-x86_defconfig
https://patchwork.ozlabs.org/patch/479745/
diff --git a/arch/x86/cpu/qemu/pci.c b/arch/x86/cpu/qemu/pci.c
new file mode 100644
index 0000000..d50ab75
--- /dev/null
+++ b/arch/x86/cpu/qemu/pci.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <pci.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void board_pci_setup_hose(struct pci_controller *hose)
+{
+ hose->first_busno = 0;
+ hose->last_busno = 0;
+
+ /* PCI memory space */
+ pci_set_region(hose->regions + 0,
+ CONFIG_PCI_MEM_BUS,
+ CONFIG_PCI_MEM_PHYS,
+ CONFIG_PCI_MEM_SIZE,
+ PCI_REGION_MEM);
+
+ /* PCI IO space */
+ pci_set_region(hose->regions + 1,
+ CONFIG_PCI_IO_BUS,
+ CONFIG_PCI_IO_PHYS,
+ CONFIG_PCI_IO_SIZE,
+ PCI_REGION_IO);
+
+ pci_set_region(hose->regions + 2,
+ CONFIG_PCI_PREF_BUS,
+ CONFIG_PCI_PREF_PHYS,
+ CONFIG_PCI_PREF_SIZE,
+ PCI_REGION_PREFETCH);
+
+ pci_set_region(hose->regions + 3,
+ 0,
+ 0,
+ gd->ram_size,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+
+ hose->region_count = 4;
+}
+
+int board_pci_post_scan(struct pci_controller *hose)
+{
+ return 0;
+}