SB700 southbridge: AMD SB700/SP5100 southbridge CIMX wrapper

[coreboot.git] / src / southbridge / amd / cimx / sb700 / bootblock.c

diff --git a/src/southbridge/amd/cimx/sb700/bootblock.c b/src/southbridge/amd/cimx/sb700/bootblock.c
new file mode 100644 (file)
index 0000000..401c039
--- /dev/null
+++ b/src/southbridge/amd/cimx/sb700/bootblock.c
@@ -0,0 +1,97 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * 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 <arch/io.h>
+#include <arch/romcc_io.h>
+
+
+#if CONFIG_CONSOLE_POST == 1
+
+/* Data */
+#define UART_RBR 0x00
+#define UART_TBR 0x00
+
+/* Control */
+#define UART_IER 0x01
+#define UART_IIR 0x02
+#define UART_FCR 0x02
+#define UART_LCR 0x03
+#define UART_MCR 0x04
+#define UART_DLL 0x00
+#define UART_DLM 0x01
+
+/* Status */
+#define UART_LSR 0x05
+#define UART_MSR 0x06
+#define UART_SCR 0x07
+
+#ifndef CONFIG_TTYS0_DIV
+#if ((115200%CONFIG_TTYS0_BAUD) != 0)
+#error Bad ttys0 baud rate
+#endif
+#define CONFIG_TTYS0_DIV       (115200/CONFIG_TTYS0_BAUD)
+#endif // CONFIG_TTYS0_DIV
+
+#define UART_LCS       CONFIG_TTYS0_LCS
+
+#endif // CONFIG_CONSOLE_POST == 1
+
+
+static void sb700_enable_rom(void)
+{
+       u32 word;
+       u32 dword;
+       device_t dev;
+
+       dev = PCI_DEV(0, 0x14, 0x03);
+       /* SB700 LPC Bridge 0:20:3:44h.
+        * BIT6: Port Enable for serial port 0x3f8-0x3ff
+        * BIT29: Port Enable for KBC port 0x60 and 0x64
+        * BIT30: Port Enable for ACPI Micro-Controller port 0x66 and 0x62
+        */
+       dword = pci_io_read_config32(dev, 0x44);
+       //dword |= (1<<6) | (1<<29) | (1<<30) ;
+       /*Turn on all of LPC IO Port decode enable */
+       dword = 0xffffffff;
+       pci_io_write_config32(dev, 0x44, dword);
+
+       /* SB700 LPC Bridge 0:20:3:48h.
+        * BIT0: Port Enable for SuperIO 0x2E-0x2F
+        * BIT1: Port Enable for SuperIO 0x4E-0x4F
+        * BIT4: Port Enable for LPC ROM Address Arrage2 (0x68-0x6C)
+        * BIT6: Port Enable for RTC IO 0x70-0x73
+        * BIT21: Port Enable for Port 0x80
+        */
+       dword = pci_io_read_config32(dev, 0x48);
+       dword |= (1<<0) | (1<<1) | (1<<4) | (1<<6) | (1<<21) ;
+       pci_io_write_config32(dev, 0x48, dword);
+
+       /* Enable 4MB rom access at 0xFFE00000 - 0xFFFFFFFF */
+       /* Set the 4MB enable bits */
+       word = pci_io_read_config16(dev, 0x6c);
+       word = 0xFFC0;
+       pci_io_write_config16(dev, 0x6c, word);
+}
+
+static void bootblock_southbridge_init(void)
+{
+       /* Setup the rom access for 2M */
+       sb700_enable_rom();
+}