sandybridge ivybridge: Treat native init as first class citizen

This is a sad story. We have three different code paths for
sandybridge and ivybridge: proper native path, google MRC path, and,
everyone's favorite: Intel FSP path. For the purpose of this patch,
the FSP path lives in its own little world, and doesn't concern us.

Since MRC was first, when native files and variables were added, they
were suffixed with "_native" to separate them from the existing code.
This can cause confusion, as the suffix might make the native files
seem parasitical.

This has been bothering me for many months. MRC should be the
parasitical path, especially since we fully support native init, and
it works more reliably, on a wider range of hardware. There have been
a few board ports that never made it to coreboot.org because MRC would
hang.

gigabyte/ga-b75m-d3h is a prime example: it did not work with MRC, so
the effort was abandoned at first. Once the native path became
available, the effort was restarted and the board is now supported.

In honor of the hackers and pioneers who made the native code
possible, rename things so that their effort is the first class
citizen.

Change-Id: Ic86cee5e00bf7f598716d3d15d1ea81ca673932f
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/11788
Tested-by: build bot (Jenkins)
Reviewed-by: Philipp Deppenwiese <zaolin@das-labor.org>

1 files changed, 48 insertions, 27 deletions

diff --git a/src/southbridge/intel/bd82x6x/early_usb.c b/src/southbridge/intel/bd82x6x/early_usb.c
index 0533ae7477..6973c6c805 100644
--- a/src/southbridge/intel/bd82x6x/early_usb.c
+++ b/src/southbridge/intel/bd82x6x/early_usb.c
@@ -1,7 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
- * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2014 Vladimir Serbinenko
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -22,35 +22,56 @@
 #include <console/console.h>
 #include <device/pci_ids.h>
 #include <device/pci_def.h>
+#include "northbridge/intel/sandybridge/sandybridge.h" /* For DEFAULT_RCBABASE.  */
 #include "pch.h"
 
-#define PCH_EHCI1_TEMP_BAR0 0xe8000000
-#define PCH_EHCI2_TEMP_BAR0 0xe8000400
-
-/*
- * Setup USB controller MMIO BAR to prevent the
- * reference code from resetting the controller.
- *
- * The BAR will be re-assigned during device
- * enumeration so these are only temporary.
- */
-void enable_usb_bar(void)
+void
+early_usb_init (const struct southbridge_usb_port *portmap)
 {
-	device_t usb0 = PCH_EHCI1_DEV;
-	device_t usb1 = PCH_EHCI2_DEV;
-	u32 cmd;
+	u32 reg32;
+	const u32 rcba_dump[8] = {
+		/* 3560 */ 0x024c8001, 0x000024a3, 0x00040002, 0x01000050,
+		/* 3570 */ 0x02000772, 0x16000f9f, 0x1800ff4f, 0x0001d630,
+	};
+	const u32 currents[] = { 0x20000153, 0x20000f57, 0x2000055b, 0x20000f51, 0x2000094a, 0x2000035f };
+	int i;
+	/* Activate PMBAR.  */
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), PMBASE, DEFAULT_PMBASE | 1);
+	pci_write_config32(PCI_DEV(0, 0x1f, 0), PMBASE + 4, 0);
+	pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x44 /* ACPI_CNTL */ , 0x80); /* Enable ACPI BAR */
+
+	/* Unlock registers.  */
+	outw (inw (DEFAULT_PMBASE | 0x003c) | 2, DEFAULT_PMBASE | 0x003c);
+	for (i = 0; i < 14; i++)
+		write32 (DEFAULT_RCBABASE + (0x3500 + 4 * i),
+			 currents[portmap[i].current]);
+	for (i = 0; i < 10; i++)
+		write32 (DEFAULT_RCBABASE + (0x3538 + 4 * i), 0);
+
+	for (i = 0; i < 8; i++)
+		write32 (DEFAULT_RCBABASE + (0x3560 + 4 * i), rcba_dump[i]);
+	for (i = 0; i < 8; i++)
+		write32 (DEFAULT_RCBABASE + (0x3580 + 4 * i), 0);
+	reg32 = 0;
+	for (i = 0; i < 14; i++)
+		if (!portmap[i].enabled)
+			reg32 |= (1 << i);
+	write32 (DEFAULT_RCBABASE + USBPDO, reg32);
+	reg32 = 0;
+	for (i = 0; i < 8; i++)
+		if (portmap[i].enabled && portmap[i].oc_pin >= 0)
+			reg32 |= (1 << (i + 8 * portmap[i].oc_pin));
+	write32 (DEFAULT_RCBABASE + USBOCM1, reg32);
+	reg32 = 0;
+	for (i = 8; i < 14; i++)
+		if (portmap[i].enabled && portmap[i].oc_pin >= 4)
+			reg32 |= (1 << (i - 8 + 8 * (portmap[i].oc_pin - 4)));
+	write32 (DEFAULT_RCBABASE + USBOCM2, reg32);
+	for (i = 0; i < 22; i++)
+		write32 (DEFAULT_RCBABASE + (0x35a8 + 4 * i), 0);
 
-	/* USB Controller 1 */
-	pci_write_config32(usb0, PCI_BASE_ADDRESS_0,
-			   PCH_EHCI1_TEMP_BAR0);
-	cmd = pci_read_config32(usb0, PCI_COMMAND);
-	cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
-	pci_write_config32(usb0, PCI_COMMAND, cmd);
+	pcie_write_config32 (PCI_DEV (0, 0x14, 0), 0xe4, 0x00000000);
 
-	/* USB Controller 2 */
-	pci_write_config32(usb1, PCI_BASE_ADDRESS_0,
-			   PCH_EHCI2_TEMP_BAR0);
-	cmd = pci_read_config32(usb1, PCI_COMMAND);
-	cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
-	pci_write_config32(usb1, PCI_COMMAND, cmd);
+	/* Relock registers.  */
+	outw (0x0000, DEFAULT_PMBASE | 0x003c);
 }