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authorMarc Jones <marcj303@gmail.com>2017-05-04 21:17:45 -0600
committerMartin Roth <martinroth@google.com>2017-06-26 00:45:41 +0000
commit244848462def7075e0c812a2f71c408668cacfe4 (patch)
treefde926f45d478b36eaebfd1261886c973b803857 /src/soc/amd/stoneyridge/sd.c
parenta0199d8e1a96d94828b31f77e0a29a282871a76a (diff)
soc: Add AMD Stoney Ridge southbridge code
Copy the Hudson/Kern code from southbridge/amd/pi/hudson. This is the first of a series of patches to migrate Stoney Ridge support from cpu, northbridge, and southbridge to soc/ Changes: - add soc/amd/stoneyridge and soc/amd/common - remove all other Husdon versions - update include paths, etc - clean up Kconfig and Makefile - create chip.c to contain chip_ops Change-Id: Ib88a868e654ad127be70ecc506f6b90b784f8d1b Signed-off-by: Marc Jones <marcj303@gmail.com> Reviewed-on: https://review.coreboot.org/19722 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/amd/stoneyridge/sd.c')
-rw-r--r--src/soc/amd/stoneyridge/sd.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/sd.c b/src/soc/amd/stoneyridge/sd.c
new file mode 100644
index 0000000000..484dee4227
--- /dev/null
+++ b/src/soc/amd/stoneyridge/sd.c
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Sage Electronic Engineering, LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <device/device.h>
+#include <delay.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <arch/io.h>
+#include <soc/hudson.h>
+
+static void sd_init(struct device *dev)
+{
+ u32 stepping;
+
+ stepping = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 3)), 0xFC);
+
+ struct soc_amd_stoneyridge_config *sd_chip =
+ (struct soc_amd_stoneyridge_config *)(dev->chip_info);
+
+ if (sd_chip->sd_mode == 3) { /* SD 3.0 mode */
+ pci_write_config32(dev, 0xA4, 0x31FEC8B2);
+ pci_write_config32(dev, 0xA8, 0x00002503);
+ pci_write_config32(dev, 0xB0, 0x02180C19);
+ pci_write_config32(dev, 0xD0, 0x0000078B);
+ }
+ else { /* SD 2.0 mode */
+ if ((stepping & 0x0000000F) == 0) { /* Stepping A0 */
+ pci_write_config32(dev, 0xA4, 0x31DE32B2);
+ pci_write_config32(dev, 0xB0, 0x01180C19);
+ pci_write_config32(dev, 0xD0, 0x0000058B);
+ }
+ else { /* Stepping >= A1 */
+ pci_write_config32(dev, 0xA4, 0x31FE3FB2);
+ pci_write_config32(dev, 0xB0, 0x01180C19);
+ pci_write_config32(dev, 0xD0, 0x0000078B);
+ }
+ }
+}
+
+static struct device_operations sd_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = sd_init,
+ .scan_bus = 0,
+};
+
+static const struct pci_driver sd_driver __pci_driver = {
+ .ops = &sd_ops,
+ .vendor = PCI_VENDOR_ID_AMD,
+ .device = PCI_DEVICE_ID_AMD_YANGTZE_SD,
+};