AMD: Isolate AGESA and PI build environments for southbridge
To backport features introduced with recent Chromebooks and/or Intel
boards in general, heavy work on the AMD AGESA platform infrastructure
is required. With the AGESA PI available in binary form only, community
members have little means to verify, debug and develop for the said
platforms.
Thus it makes sense to fork the existing agesawrapper interfaces, to give
AMD PI platforms a clean and independent sandbox. New directory layout
reflects the separation already taken place under 3rdparty/ and vendorcode/.
Change-Id: Ia730f0e45e7c1bdfc0c91e95eb6729a77773e2b9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7388
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com>
Tested-by: build bot (Jenkins)
diff --git a/src/southbridge/amd/pi/avalon/sd.c b/src/southbridge/amd/pi/avalon/sd.c
new file mode 100644
index 0000000..4367f7a
--- /dev/null
+++ b/src/southbridge/amd/pi/avalon/sd.c
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#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 "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 southbridge_amd_pi_avalon_config *sd_chip =
+ (struct southbridge_amd_pi_avalon_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,
+};