Ronald G. Minnich (rminnich@gmail.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13701
-gerrit
commit ae6cbb2bbcd0683bf0a821d7e2eb20f48bb50a8f Author: Ronald G. Minnich rminnich@gmail.com Date: Fri Feb 12 22:37:48 2016 +0000
emulation/qemu-power8: initial mainboard commit
Doesn't build, but a quick outline we hope.
Change-Id: Ida52cb39464e26af7808cb569d53fa9edc548ecf Signed-off-by: Ronald G. Minnich rminnich@gmail.com --- src/mainboard/emulation/qemu-power8/Kconfig | 53 ++++++++++++++++++++ src/mainboard/emulation/qemu-power8/Kconfig.name | 2 + src/mainboard/emulation/qemu-power8/Makefile.inc | 23 +++++++++ src/mainboard/emulation/qemu-power8/board_info.txt | 2 + src/mainboard/emulation/qemu-power8/bootblock.c | 31 ++++++++++++ src/mainboard/emulation/qemu-power8/devicetree.cb | 20 ++++++++ src/mainboard/emulation/qemu-power8/mainboard.c | 36 ++++++++++++++ src/mainboard/emulation/qemu-power8/memlayout.ld | 29 +++++++++++ src/mainboard/emulation/qemu-power8/romstage.c | 23 +++++++++ src/mainboard/emulation/qemu-power8/uart.c | 57 ++++++++++++++++++++++ 10 files changed, 276 insertions(+)
diff --git a/src/mainboard/emulation/qemu-power8/Kconfig b/src/mainboard/emulation/qemu-power8/Kconfig new file mode 100644 index 0000000..307ed6a --- /dev/null +++ b/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 diff --git a/src/mainboard/emulation/qemu-power8/Kconfig.name b/src/mainboard/emulation/qemu-power8/Kconfig.name new file mode 100644 index 0000000..34fdddc --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/Kconfig.name @@ -0,0 +1,2 @@ +config BOARD_EMULATION_QEMU_POWER8 + bool "QEMU power8" diff --git a/src/mainboard/emulation/qemu-power8/Makefile.inc b/src/mainboard/emulation/qemu-power8/Makefile.inc new file mode 100644 index 0000000..e60e0c1 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/Makefile.inc @@ -0,0 +1,23 @@ +## +## 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 += romstage.c +romstage-y += uart.c +ramstage-y += uart.c + +bootblock-y += memlayout.ld +romstage-y += memlayout.ld +ramstage-y += memlayout.ld diff --git a/src/mainboard/emulation/qemu-power8/board_info.txt b/src/mainboard/emulation/qemu-power8/board_info.txt new file mode 100644 index 0000000..9f57825 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/board_info.txt @@ -0,0 +1,2 @@ +Board name: QEMU POWER8 +Category: emulation diff --git a/src/mainboard/emulation/qemu-power8/bootblock.c b/src/mainboard/emulation/qemu-power8/bootblock.c new file mode 100644 index 0000000..3e88620 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/bootblock.c @@ -0,0 +1,31 @@ +/* + * 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 <arch/exception.h> +#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(); + exception_init(); + } + + run_romstage(); +} diff --git a/src/mainboard/emulation/qemu-power8/devicetree.cb b/src/mainboard/emulation/qemu-power8/devicetree.cb new file mode 100644 index 0000000..e3ce088 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/devicetree.cb @@ -0,0 +1,20 @@ +## +## 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 soc/ucb/riscv + device cpu_cluster 0 on end + chip drivers/generic/generic # I2C0 controller + device i2c 6 on end # Fake component for testing + end +end diff --git a/src/mainboard/emulation/qemu-power8/mainboard.c b/src/mainboard/emulation/qemu-power8/mainboard.c new file mode 100644 index 0000000..b7a7213 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/mainboard.c @@ -0,0 +1,36 @@ +/* + * 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, +}; diff --git a/src/mainboard/emulation/qemu-power8/memlayout.ld b/src/mainboard/emulation/qemu-power8/memlayout.ld new file mode 100644 index 0000000..2daad30 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/memlayout.ld @@ -0,0 +1,29 @@ +/* + * 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) +} diff --git a/src/mainboard/emulation/qemu-power8/romstage.c b/src/mainboard/emulation/qemu-power8/romstage.c new file mode 100644 index 0000000..b6314ccd --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/romstage.c @@ -0,0 +1,23 @@ +/* + * 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(); +} diff --git a/src/mainboard/emulation/qemu-power8/uart.c b/src/mainboard/emulation/qemu-power8/uart.c new file mode 100644 index 0000000..508d679 --- /dev/null +++ b/src/mainboard/emulation/qemu-power8/uart.c @@ -0,0 +1,57 @@ +/* + * 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
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Ronald G. Minnich