Add ASUS M5A88-V mainboard support

it's a AMD 880+800 mainboard. I port the code
based on the AMD reference code.
update: 1.use CIMX instead of pmio
          2.fix some whitespace
          3.fix subsystemid of devicetree.cb

Change-Id: I9725ccdbb25365c4007621318efee80b131fec29
Signed-off-by: QingPei Wang <wangqingpei@gmail.com>
Reviewed-on: http://review.coreboot.org/205
Tested-by: build bot (Jenkins)
Reviewed-by: Kerry Sheh <shekairui@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 145 insertions, 0 deletions

diff --git a/src/mainboard/asus/m5a88-v/mainboard.c b/src/mainboard/asus/m5a88-v/mainboard.c
new file mode 100644
index 0000000000..f778243970
--- /dev/null
+++ b/src/mainboard/asus/m5a88-v/mainboard.c
@@ -0,0 +1,145 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 QingPei Wang <wangqingpei@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; 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 <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <arch/io.h>
+#include <boot/tables.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/mtrr.h>
+#include <device/pci_def.h>
+#include "SBPLATFORM.h"
+#include "chip.h"
+
+uint64_t uma_memory_base, uma_memory_size;
+
+u8 is_dev3_present(void);
+void set_pcie_dereset(void);
+void set_pcie_reset(void);
+void enable_int_gfx(void);
+
+/* GPIO6. */
+void enable_int_gfx(void)
+{
+	volatile u8 *gpio_reg;
+
+#ifdef UNUSED_CODE
+	RWPMIO(SB_PMIOA_REGEA, AccWidthUint8, ~(BIT0), BIT0); /* Disable the PCIB */
+	RWPMIO(SB_PMIOA_REGF6, AccWidthuint8, ~(BIT0), BIT0); /* Disable Gec */
+#endif	
+	/* make sure the MMIO(fed80000) is accessible */
+	RWPMIO(SB_PMIOA_REG24, AccWidthUint8, ~(BIT0), BIT0);
+
+	gpio_reg = (volatile u8 *)ACPI_MMIO_BASE + 0xD00; /* IoMux Register */
+
+	*(gpio_reg + 0x6) = 0x1; /* Int_vga_en */
+	*(gpio_reg + 170) = 0x1; /* gpio_gate */
+
+	gpio_reg = (volatile u8 *)ACPI_MMIO_BASE + 0x100; /* GPIO Registers */
+
+	*(gpio_reg + 0x6) = 0x8;
+	*(gpio_reg + 170) = 0x0;
+}
+
+void set_pcie_dereset()
+{
+}
+
+void set_pcie_reset(void)
+{
+}
+
+u8 is_dev3_present(void)
+{
+	return 0;
+}
+
+
+/*************************************************
+* enable the dedicated function in M5A88-V board.
+* This function called early than rs780_enable.
+*************************************************/
+static void m5a88pm_v_enable(device_t dev)
+{
+
+	printk(BIOS_INFO, "Mainboard ASUS M5A88-V Enable. dev=0x%p\n", dev);
+
+#if (CONFIG_GFXUMA == 1)
+	msr_t msr, msr2;
+
+	/* TOP_MEM: the top of DRAM below 4G */
+	msr = rdmsr(TOP_MEM);
+	printk
+	    (BIOS_INFO, "%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
+	     __func__, msr.lo, msr.hi);
+
+	/* TOP_MEM2: the top of DRAM above 4G */
+	msr2 = rdmsr(TOP_MEM2);
+	printk
+	    (BIOS_INFO, "%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n",
+	     __func__, msr2.lo, msr2.hi);
+
+	/* refer to UMA Size Consideration in 780 BDG. */
+	switch (msr.lo) {
+	case 0x10000000:	/* 256M system memory */
+		uma_memory_size = 0x4000000;	/* 64M recommended UMA */
+		break;
+
+	case 0x20000000:	/* 512M system memory */
+		uma_memory_size = 0x8000000;	/* 128M recommended UMA */
+		break;
+
+	default:		/* 1GB and above system memory */
+		uma_memory_size = 0x10000000;	/* 256M recommended UMA */
+		break;
+	}
+
+	uma_memory_base = msr.lo - uma_memory_size;	/* TOP_MEM1 */
+	printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n",
+		    __func__, uma_memory_size, uma_memory_base);
+
+	/* TODO: TOP_MEM2 */
+#else
+	uma_memory_size = 0x8000000;	/* 128M recommended UMA */
+	uma_memory_base = 0x38000000;	/* 1GB  system memory supposed */
+#endif
+
+	set_pcie_dereset();
+	enable_int_gfx();
+}
+
+int add_mainboard_resources(struct lb_memory *mem)
+{
+	/* UMA is removed from system memory in the northbridge code, but
+	 * in some circumstances we want the memory mentioned as reserved.
+	 */
+#if (CONFIG_GFXUMA == 1)
+	printk(BIOS_INFO, "uma_memory_start=0x%llx, uma_memory_size=0x%llx \n",
+		    uma_memory_base, uma_memory_size);
+	lb_add_memory_range(mem, LB_MEM_RESERVED, uma_memory_base,
+			    uma_memory_size);
+#endif
+	return 0;
+}
+
+struct chip_operations mainboard_ops = {
+	CHIP_NAME("ASUS M5A88-V Mainboard")
+	.enable_dev = m5a88pm_v_enable,
+};