VX900: Add support for early romstage

Add support for VX900 early initialization up until, but not including
raminit. Add the basic infrastructure, add a romstrap table, and
functionality to configure the CPU bus and SMBus.

This code is necessary and sufficient to prepare us for raminit.

Change-Id: Icc9c41e4927b589f17416836f87a6a5843b24aa7
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/3372
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/src/northbridge/via/vx900/early_vx900.h b/src/northbridge/via/vx900/early_vx900.h
new file mode 100644
index 0000000000..dcb24b5f75
--- /dev/null
+++ b/src/northbridge/via/vx900/early_vx900.h
@@ -0,0 +1,81 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011-2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef EARLY_VX900_H
+#define EARLY_VX900_H
+
+#include "raminit.h"
+#include "vx900.h"
+
+#include <arch/io.h>
+#include <cbmem.h>
+#include <stdint.h>
+#include <arch/io.h>
+
+/* North Module devices */
+#define HOST_CTR PCI_DEV(0, 0, 0)
+#define ERR_REP  PCI_DEV(0, 0, 1)
+#define HOST_BUS PCI_DEV(0, 0, 2)
+#define MCU      PCI_DEV(0, 0, 3)
+#define POWERMAN PCI_DEV(0, 0, 4)
+#define TRAF_CTR PCI_DEV(0, 0, 5)
+#define NSBIC    PCI_DEV(0, 0, 7)
+
+#define GFX      PCI_DEV(0, 1, 0)
+#define HDMI     PCI_DEV(0, 1, 0)
+
+#define PEXx     PCI_DEV(0, 3, x)
+#define PEX_CTR  PCI_DEV(0, 3, 4)
+
+/* South Module devices */
+#define UARTx    PCI_DEV(0, 0x0a, x)
+#define USB_MASS PCI_DEV(0, 0x0b, 0)
+#define SDIO     PCI_DEV(0, 0x0c, 0)
+#define CARD_RD  PCI_DEV(0, 0x0d, 0)
+#define SATA     PCI_DEV(0, 0x0d, 0)
+#define USBx     PCI_DEV(0, 0x10, x)
+#define USB_EHCI PCI_DEV(0, 0x10, 4)
+#define LPC      PCI_DEV(0, 0x11, 0)
+#define PMU      LPC
+#define SNMIC    PCI_DEV(0, 0x11, 7)
+#define P2P      PCI_DEV(0, 0x13, 0)
+#define HDAC     PCI_DEV(0, 0x14, 0)
+
+/* These control the behavior of raminit */
+#define RAMINIT_USE_HW_RXCR_CALIB	0
+#define RAMINIT_USE_HW_MRS_SEQ		0
+
+unsigned long get_top_of_ram(void);
+
+void enable_smbus(void);
+void dump_spd_data(spd_raw_data spd);
+void spd_read(u8 addr, spd_raw_data spd);
+
+void vx900_enable_pci_config_space(void);
+void vx900_disable_legacy_rom_shadow(void);
+
+void vx900_print_strapping_info(void);
+void vx900_disable_auto_reboot(void);
+
+void vx900_cpu_bus_interface_setup(void);
+
+void vx900_dram_set_gfx_resources(void);
+void vx900_disable_gfx(void);
+
+#endif				/* EARLY_VX900_H */