emulation/qemu-power8: initial mainboard and arch commit

This builds and produces an image.

The next step is to get a 'halt' instruction into the boot block and then attach with qemu.

I can't get the powerpc64le-linux-gnu-ld.bfd to recognize any output arch but
powerpc. That makes no sense to me.

Change-Id: Ia2a5fe07a1457e7b6974ab1473539c7447d7a449
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/13704
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/mainboard/emulation/qemu-power8/Kconfig

@@ -0,0 +1,53 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Google Inc.
+##
+## This software is licensed under the terms of the GNU General Public
+## License version 2, as published by the Free Software Foundation, and
+## may be copied, distributed, and modified under those terms.
+##
+## 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.
+
+# To execute, do:
+# qemu-system-??
+
+if BOARD_EMULATION_QEMU_POWER8
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select BOARD_ROMSIZE_KB_4096
+	select ARCH_BOOTBLOCK_POWER8
+	select HAVE_UART_SPECIAL
+	select ARCH_POWER8
+
+config MAINBOARD_DIR
+	string
+	default "emulation/qemu-power8"
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "QEMU POWER8"
+
+config MAX_CPUS
+	int
+	default 1
+
+config MAINBOARD_VENDOR
+	string
+	default "QEMU"
+
+config DRAM_SIZE_MB
+	int
+	default 32768
+
+# Memory map for qemu power8
+
+config RAMTOP
+	hex
+	default 0x1000000
+
+endif #  BOARD_EMULATION_QEMU_POWER8

src/mainboard/emulation/qemu-power8/Kconfig.name

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+config BOARD_EMULATION_QEMU_POWER8
+	bool "QEMU power8"

src/mainboard/emulation/qemu-power8/Makefile.inc

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+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2013 Google Inc.
+##
+## This software is licensed under the terms of the GNU General Public
+## License version 2, as published by the Free Software Foundation, and
+## may be copied, distributed, and modified under those terms.
+##
+## 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.
+
+bootblock-y += bootblock.c
+bootblock-y += uart.c
+romstage-y += cbmem.c
+ramstage-y += cbmem.c
+romstage-y += romstage.c
+romstage-y += uart.c
+ramstage-y += uart.c
+
+bootblock-y += memlayout.ld
+romstage-y += memlayout.ld
+ramstage-y += memlayout.ld

src/mainboard/emulation/qemu-power8/board_info.txt

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+Board name: QEMU POWER8
+Category: emulation

src/mainboard/emulation/qemu-power8/bootblock.c

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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google 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.
+ */
+
+#include <bootblock_common.h>
+#include <console/console.h>
+#include <program_loading.h>
+
+// the qemu part of all this is very, very non-hardware like.
+// so it gets its own bootblock.
+void main(void)
+{
+	if (IS_ENABLED(CONFIG_BOOTBLOCK_CONSOLE)) {
+		console_init();
+	}
+
+	run_romstage();
+}

src/mainboard/emulation/qemu-power8/cbmem.c

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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <cbmem.h>
+
+void *cbmem_top(void)
+{
+	/* Top of cbmem is at lowest usable DRAM address below 4GiB. */
+	/* For now, last 1M of 4G */
+	void *ptr = (void *) ((1ULL << 32) - 1048576);
+	return ptr;
+}
+

src/mainboard/emulation/qemu-power8/devicetree.cb

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+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Google, Inc.
+##
+## This software is licensed under the terms of the GNU General Public
+## License version 2, as published by the Free Software Foundation, and
+## may be copied, distributed, and modified under those terms.
+##
+## 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.
+
+chip cpu/qemu-power8
+	device cpu_cluster 0 on end
+end

src/mainboard/emulation/qemu-power8/mainboard.c

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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <cbmem.h>
+
+static void mainboard_enable(device_t dev)
+{
+
+	if (!dev) {
+		printk(BIOS_EMERG, "No dev0; die\n");
+		while (1)
+			;
+	}
+
+	// Where does ram live?
+	ram_resource(dev, 0, 2048, 32768);
+	cbmem_recovery(0);
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+};

src/mainboard/emulation/qemu-power8/memlayout.ld

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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 Google 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.
+ */
+
+#include <memlayout.h>
+
+#include <arch/header.ld>
+
+// TODO: fill in these blanks for Power8.
+SECTIONS
+{
+	DRAM_START(0x0)
+	BOOTBLOCK(0x0, 64K)
+	ROMSTAGE(0x20000, 128K)
+	STACK(0x40000, 0x3ff00)
+	PRERAM_CBMEM_CONSOLE(0x80000, 8K)
+	RAMSTAGE(0x100000, 16M)
+}

src/mainboard/emulation/qemu-power8/romstage.c

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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <console/console.h>
+#include <program_loading.h>
+
+void main(void)
+{
+	console_init();
+	run_ramstage();
+}

src/mainboard/emulation/qemu-power8/uart.c

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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 Google 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.
+ */
+
+#include <types.h>
+#include <console/uart.h>
+#include <arch/io.h>
+#include <boot/coreboot_tables.h>
+
+static uint8_t *buf = (void *)0;
+uintptr_t uart_platform_base(int idx)
+{
+	return (uintptr_t) buf;
+}
+
+void uart_init(int idx)
+{
+}
+
+unsigned char uart_rx_byte(int idx)
+{
+	return 0;
+}
+
+void uart_tx_byte(int idx, unsigned char data)
+{
+
+}
+
+void uart_tx_flush(int idx)
+{
+}
+
+#ifndef __PRE_RAM__
+void uart_fill_lb(void *data)
+{
+	struct lb_serial serial;
+
+	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
+	serial.baseaddr = 0;
+	serial.baud = 115200;
+	serial.regwidth = 1;
+	lb_add_serial(&serial, data);
+	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
+}
+#endif