Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/mtd/maps/l440gx.c b/drivers/mtd/maps/l440gx.c
new file mode 100644
index 0000000..b086682
--- /dev/null
+++ b/drivers/mtd/maps/l440gx.c
@@ -0,0 +1,157 @@
+/*
+ * $Id: l440gx.c,v 1.17 2004/11/28 09:40:39 dwmw2 Exp $
+ *
+ * BIOS Flash chip on Intel 440GX board.
+ *
+ * Bugs this currently does not work under linuxBIOS.
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/config.h>
+
+#define PIIXE_IOBASE_RESOURCE 11
+
+#define WINDOW_ADDR 0xfff00000
+#define WINDOW_SIZE 0x00100000
+#define BUSWIDTH 1
+
+static u32 iobase;
+#define IOBASE iobase
+#define TRIBUF_PORT (IOBASE+0x37)
+#define VPP_PORT (IOBASE+0x28)
+
+static struct mtd_info *mymtd;
+
+
+/* Is this really the vpp port? */
+static void l440gx_set_vpp(struct map_info *map, int vpp)
+{
+ unsigned long l;
+
+ l = inl(VPP_PORT);
+ if (vpp) {
+ l |= 1;
+ } else {
+ l &= ~1;
+ }
+ outl(l, VPP_PORT);
+}
+
+static struct map_info l440gx_map = {
+ .name = "L440GX BIOS",
+ .size = WINDOW_SIZE,
+ .bankwidth = BUSWIDTH,
+ .phys = WINDOW_ADDR,
+#if 0
+ /* FIXME verify that this is the
+ * appripriate code for vpp enable/disable
+ */
+ .set_vpp = l440gx_set_vpp
+#endif
+};
+
+static int __init init_l440gx(void)
+{
+ struct pci_dev *dev, *pm_dev;
+ struct resource *pm_iobase;
+ __u16 word;
+
+ dev = pci_find_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_0, NULL);
+
+ pm_dev = pci_find_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
+
+ if (!dev || !pm_dev) {
+ printk(KERN_NOTICE "L440GX flash mapping: failed to find PIIX4 ISA bridge, cannot continue\n");
+ return -ENODEV;
+ }
+
+ l440gx_map.virt = ioremap_nocache(WINDOW_ADDR, WINDOW_SIZE);
+
+ if (!l440gx_map.virt) {
+ printk(KERN_WARNING "Failed to ioremap L440GX flash region\n");
+ return -ENOMEM;
+ }
+ simple_map_init(&l440gx_map);
+ printk(KERN_NOTICE "window_addr = 0x%08lx\n", (unsigned long)l440gx_map.virt);
+
+ /* Setup the pm iobase resource
+ * This code should move into some kind of generic bridge
+ * driver but for the moment I'm content with getting the
+ * allocation correct.
+ */
+ pm_iobase = &pm_dev->resource[PIIXE_IOBASE_RESOURCE];
+ if (!(pm_iobase->flags & IORESOURCE_IO)) {
+ pm_iobase->name = "pm iobase";
+ pm_iobase->start = 0;
+ pm_iobase->end = 63;
+ pm_iobase->flags = IORESOURCE_IO;
+
+ /* Put the current value in the resource */
+ pci_read_config_dword(pm_dev, 0x40, &iobase);
+ iobase &= ~1;
+ pm_iobase->start += iobase & ~1;
+ pm_iobase->end += iobase & ~1;
+
+ /* Allocate the resource region */
+ if (pci_assign_resource(pm_dev, PIIXE_IOBASE_RESOURCE) != 0) {
+ printk(KERN_WARNING "Could not allocate pm iobase resource\n");
+ iounmap(l440gx_map.virt);
+ return -ENXIO;
+ }
+ }
+ /* Set the iobase */
+ iobase = pm_iobase->start;
+ pci_write_config_dword(pm_dev, 0x40, iobase | 1);
+
+
+ /* Set XBCS# */
+ pci_read_config_word(dev, 0x4e, &word);
+ word |= 0x4;
+ pci_write_config_word(dev, 0x4e, word);
+
+ /* Supply write voltage to the chip */
+ l440gx_set_vpp(&l440gx_map, 1);
+
+ /* Enable the gate on the WE line */
+ outb(inb(TRIBUF_PORT) & ~1, TRIBUF_PORT);
+
+ printk(KERN_NOTICE "Enabled WE line to L440GX BIOS flash chip.\n");
+
+ mymtd = do_map_probe("jedec_probe", &l440gx_map);
+ if (!mymtd) {
+ printk(KERN_NOTICE "JEDEC probe on BIOS chip failed. Using ROM\n");
+ mymtd = do_map_probe("map_rom", &l440gx_map);
+ }
+ if (mymtd) {
+ mymtd->owner = THIS_MODULE;
+
+ add_mtd_device(mymtd);
+ return 0;
+ }
+
+ iounmap(l440gx_map.virt);
+ return -ENXIO;
+}
+
+static void __exit cleanup_l440gx(void)
+{
+ del_mtd_device(mymtd);
+ map_destroy(mymtd);
+
+ iounmap(l440gx_map.virt);
+}
+
+module_init(init_l440gx);
+module_exit(cleanup_l440gx);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
+MODULE_DESCRIPTION("MTD map driver for BIOS chips on Intel L440GX motherboards");