+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014 Google, Inc
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <malloc.h>
#include <pch.h>
+#include <asm/cpu.h>
+#include <asm/intel_regs.h>
#include <asm/io.h>
#include <asm/lapic.h>
+#include <asm/lpc_common.h>
#include <asm/pci.h>
-#include <asm/arch/bd82x6x.h>
#include <asm/arch/model_206ax.h>
#include <asm/arch/pch.h>
#include <asm/arch/sandybridge.h>
-#define BIOS_CTRL 0xdc
+DECLARE_GLOBAL_DATA_PTR;
+
+#define GPIO_BASE 0x48
+#define BIOS_CTRL 0xdc
+#define RCBA_AUDIO_CONFIG 0x2030
+#define RCBA_AUDIO_CONFIG_HDA BIT(31)
+#define RCBA_AUDIO_CONFIG_MASK 0xfe
+
+#ifndef CONFIG_HAVE_FSP
static int pch_revision_id = -1;
static int pch_type = -1;
static int bd82x6x_probe(struct udevice *dev)
{
- const void *blob = gd->fdt_blob;
- int gma_node;
- int ret;
-
if (!(gd->flags & GD_FLG_RELOC))
return 0;
/* Cause the SATA device to do its init */
- uclass_first_device(UCLASS_DISK, &dev);
-
- gma_node = fdtdec_next_compatible(blob, 0, COMPAT_INTEL_GMA);
- if (gma_node < 0) {
- debug("%s: Cannot find GMA node\n", __func__);
- return -EINVAL;
- }
- ret = dm_pci_bus_find_bdf(PCH_VIDEO_DEV, &dev);
- if (ret)
- return ret;
- ret = gma_func0_init(dev, blob, gma_node);
- if (ret)
- return ret;
+ uclass_first_device(UCLASS_AHCI, &dev);
return 0;
}
+#endif /* CONFIG_HAVE_FSP */
-static int bd82x6x_pch_get_sbase(struct udevice *dev, ulong *sbasep)
+static int bd82x6x_pch_get_spi_base(struct udevice *dev, ulong *sbasep)
{
u32 rcba;
return 0;
}
-static enum pch_version bd82x6x_pch_get_version(struct udevice *dev)
+static int bd82x6x_set_spi_protect(struct udevice *dev, bool protect)
{
- return PCHV_9;
+ return lpc_set_spi_protect(dev, BIOS_CTRL, protect);
}
-static int bd82x6x_set_spi_protect(struct udevice *dev, bool protect)
+static int bd82x6x_get_gpio_base(struct udevice *dev, u32 *gbasep)
{
- uint8_t bios_cntl;
-
- /* Adjust the BIOS write protect and SMM BIOS Write Protect Disable */
- dm_pci_read_config8(dev, BIOS_CTRL, &bios_cntl);
- if (protect) {
- bios_cntl &= ~BIOS_CTRL_BIOSWE;
- bios_cntl |= BIT(5);
- } else {
- bios_cntl |= BIOS_CTRL_BIOSWE;
- bios_cntl &= ~BIT(5);
+ u32 base;
+
+ /*
+ * GPIO_BASE moved to its current offset with ICH6, but prior to
+ * that it was unused (or undocumented). Check that it looks
+ * okay: not all ones or zeros.
+ *
+ * Note we don't need check bit0 here, because the Tunnel Creek
+ * GPIO base address register bit0 is reserved (read returns 0),
+ * while on the Ivybridge the bit0 is used to indicate it is an
+ * I/O space.
+ */
+ dm_pci_read_config32(dev, GPIO_BASE, &base);
+ if (base == 0x00000000 || base == 0xffffffff) {
+ debug("%s: unexpected BASE value\n", __func__);
+ return -ENODEV;
}
- dm_pci_write_config8(dev, BIOS_CTRL, bios_cntl);
+
+ /*
+ * Okay, I guess we're looking at the right device. The actual
+ * GPIO registers are in the PCI device's I/O space, starting
+ * at the offset that we just read. Bit 0 indicates that it's
+ * an I/O address, not a memory address, so mask that off.
+ */
+ *gbasep = base & 1 ? base & ~3 : base & ~15;
return 0;
}
+static int bd82x6x_ioctl(struct udevice *dev, enum pch_req_t req, void *data,
+ int size)
+{
+ u32 rcba, val;
+
+ switch (req) {
+ case PCH_REQ_HDA_CONFIG:
+ dm_pci_read_config32(dev, PCH_RCBA, &rcba);
+ val = readl(rcba + RCBA_AUDIO_CONFIG);
+ if (!(val & RCBA_AUDIO_CONFIG_HDA))
+ return -ENOENT;
+
+ return val & RCBA_AUDIO_CONFIG_MASK;
+ default:
+ return -ENOSYS;
+ }
+}
+
static const struct pch_ops bd82x6x_pch_ops = {
- .get_sbase = bd82x6x_pch_get_sbase,
- .get_version = bd82x6x_pch_get_version,
+ .get_spi_base = bd82x6x_pch_get_spi_base,
.set_spi_protect = bd82x6x_set_spi_protect,
+ .get_gpio_base = bd82x6x_get_gpio_base,
+ .ioctl = bd82x6x_ioctl,
};
static const struct udevice_id bd82x6x_ids[] = {
.name = "bd82x6x",
.id = UCLASS_PCH,
.of_match = bd82x6x_ids,
+#ifndef CONFIG_HAVE_FSP
.probe = bd82x6x_probe,
+#endif
.ops = &bd82x6x_pch_ops,
};