Add support for ram payloads
This is enabled by CONFIG_RAMPAYLOAD. The code will look for a ram payload and, if it is found, try to run it. If the load fails or the payload returns it will continue with ramstage. We also include a new payload, linuxcheck, which is intended to verify that linux can be loaded and run, e.g. as a LinuxBoot payload. Currently, it fails. This does not yet work but it makes sense as a foundation on which to build. For one thing, we need to build at least a few tables for Linux. The goal for LinuxBoot is to build as few as possible. To test with linuxcheck (linux is not even close to working): cd payloads/linuxcheck/ cp x86config .config make cd ../.. make ./build/cbfstool build/coreboot.rom add-payload -n fallback/rampayload -f payloads/linuxcheck/linuxcheck.elf qemu-system-x86_64 -nographic -m 8192 -bios build/coreboot.rom -monitor /dev/pts/$1 -s We need to change the payload menu so we can add a rampayload but it's a bit tricky as written, so that must come later. Note that I'm still creating a special purpose romselfboot. The idea of merging romselfboot and selfboot is probably a good idea -- in the future. I think until we know how this should look, such a merge is premature. Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Change-Id: I8199aae6776f6dee969b370b0e6a41ef96e854d8 clang-formatted-by: Ronald G. Minnich Reviewed-on: https://review.coreboot.org/28402 Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
This commit is contained in:
parent
aef592d9b6
commit
4cea3a19f8
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@ -27,6 +27,7 @@ PAYLOADS_LIST=\
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payloads/coreinfo \
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payloads/nvramcui \
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payloads/libpayload \
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payloads/linuxcheck \
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payloads/external/depthcharge \
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payloads/external/SeaBIOS \
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payloads/external/U-Boot \
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@ -0,0 +1,34 @@
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LIBPAYLOAD_DIR=$(CURDIR)/libpayload
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XCOMPILE=$(LIBPAYLOAD_DIR)/libpayload.xcompile
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# build libpayload and put .config file in $(CURDIR) instead of ../libpayload
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# to avoid pollute the libpayload source directory and possible conflicts
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LPOPTS=obj="$(CURDIR)/build" DESTDIR="$(CURDIR)" DOTCONFIG="$(CURDIR)/.config"
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CFLAGS += -Wall -Werror -Os -ffreestanding -nostdinc -nostdlib
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all: linuxcheck.elf
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$(LIBPAYLOAD_DIR):
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$(MAKE) -C ../libpayload $(LPOPTS) defconfig
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$(MAKE) -C ../libpayload $(LPOPTS)
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$(MAKE) -C ../libpayload $(LPOPTS) install
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ifneq ($(strip $(wildcard libpayload)),)
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include $(XCOMPILE)
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LPGCC = CC="$(GCC_CC_x86_32)" "$(LIBPAYLOAD_DIR)/bin/lpgcc"
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%.elf: %.c Makefile
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$(LPGCC) $(CFLAGS) -o $*.elf $*.c
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else
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# If libpayload is not found, first build libpayload,
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# then do the make, this time it'll find libpayload
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# and generate the linuxcheck.elf target
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%.elf: $(LIBPAYLOAD_DIR)
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$(MAKE) all
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endif
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clean:
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rm -f linuxcheck.elf
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distclean: clean
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rm -rf build libpayload .config .config.old
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.PHONY: all clean distclean
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@ -0,0 +1,43 @@
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/*
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* This file is part of the coreinfo project.
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*
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* Copyright (C) 2018 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <libpayload-config.h>
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#include <libpayload.h>
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extern struct console_output_driver *console_out;
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extern struct sysinfo_t lib_sysinfo;
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static void buts(char *s)
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{
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int i;
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for (i = 0; i < strlen(s); i++)
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outb(s[i], 0x3f8);
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}
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int main(void)
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{
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buts("Greetings from linuxcheck, via hard-coded calls to serial functions.\n");
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if (console_out == NULL)
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buts("Bad news: console_out is NULL\n");
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if (lib_sysinfo.serial == NULL)
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buts("Bad news: lib_sysinfo.serial is NULL. Very little will work well.\n");
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buts("The next line should be puts works\n");
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puts("puts works\n");
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buts("If you did not see puts works, then you have a console issues\n");
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buts("The next line should be 'printf works'\n");
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printf("printf works\n");
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buts(" ... if you did not see printf works, then you have a printf issue\n");
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buts("Now we will halt. Bye");
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halt();
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return 0;
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}
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@ -0,0 +1,115 @@
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#
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# Automatically generated file; DO NOT EDIT.
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# Libpayload Configuration
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#
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#
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# Generic Options
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#
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# CONFIG_LP_GPL is not set
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# CONFIG_LP_EXPERIMENTAL is not set
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# CONFIG_LP_DEVELOPER is not set
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# CONFIG_LP_CHROMEOS is not set
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CONFIG_LP_COMPILER_GCC=y
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# CONFIG_LP_COMPILER_LLVM_CLANG is not set
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# CONFIG_LP_MEMMAP_RAM_ONLY is not set
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#
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# Architecture Options
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#
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# CONFIG_LP_ARCH_ARM is not set
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CONFIG_LP_ARCH_X86=y
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# CONFIG_LP_ARCH_ARM64 is not set
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# CONFIG_LP_ARCH_MIPS is not set
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# CONFIG_LP_MULTIBOOT is not set
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CONFIG_LP_HEAP_SIZE=262144
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CONFIG_LP_STACK_SIZE=16384
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CONFIG_LP_BASE_ADDRESS=0x00100000
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# CONFIG_LP_USE_MARCH_586 is not set
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#
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# Standard Libraries
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#
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CONFIG_LP_LIBC=y
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CONFIG_LP_CURSES=y
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# CONFIG_LP_TINYCURSES is not set
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CONFIG_LP_PDCURSES=y
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CONFIG_LP_CBFS=y
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CONFIG_LP_LZMA=y
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CONFIG_LP_LZ4=y
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#
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# Console Options
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#
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# CONFIG_LP_SKIP_CONSOLE_INIT is not set
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CONFIG_LP_CBMEM_CONSOLE=y
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CONFIG_LP_SERIAL_CONSOLE=y
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CONFIG_LP_8250_SERIAL_CONSOLE=y
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# CONFIG_LP_S5P_SERIAL_CONSOLE is not set
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# CONFIG_LP_IPQ806X_SERIAL_CONSOLE is not set
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# CONFIG_LP_IPQ40XX_SERIAL_CONSOLE is not set
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# CONFIG_LP_BG4CD_SERIAL_CONSOLE is not set
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# CONFIG_LP_PL011_SERIAL_CONSOLE is not set
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CONFIG_LP_SERIAL_IOBASE=0x3f8
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# CONFIG_LP_SERIAL_SET_SPEED is not set
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# CONFIG_LP_SERIAL_ACS_FALLBACK is not set
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CONFIG_LP_VIDEO_CONSOLE=y
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CONFIG_LP_VGA_VIDEO_CONSOLE=y
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# CONFIG_LP_GEODELX_VIDEO_CONSOLE is not set
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CONFIG_LP_COREBOOT_VIDEO_CONSOLE=y
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CONFIG_LP_FONT_SCALE_FACTOR=0
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CONFIG_LP_PC_I8042=y
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CONFIG_LP_PC_MOUSE=y
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CONFIG_LP_PC_KEYBOARD=y
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CONFIG_LP_PC_KEYBOARD_LAYOUT_US=y
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# CONFIG_LP_PC_KEYBOARD_LAYOUT_DE is not set
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#
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# Drivers
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#
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CONFIG_LP_PCI=y
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CONFIG_LP_NVRAM=y
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CONFIG_LP_MOUSE_CURSOR=y
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# CONFIG_LP_RTC_PORT_EXTENDED_VIA is not set
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CONFIG_LP_SPEAKER=y
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CONFIG_LP_TIMER_RDTSC=y
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# CONFIG_LP_TIMER_NONE is not set
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# CONFIG_LP_TIMER_MCT is not set
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# CONFIG_LP_TIMER_TEGRA_1US is not set
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# CONFIG_LP_TIMER_IPQ806X is not set
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# CONFIG_LP_TIMER_ARMADA38X is not set
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# CONFIG_LP_TIMER_IPQ40XX is not set
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# CONFIG_LP_TIMER_ARM64_ARCH is not set
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# CONFIG_LP_TIMER_RK3288 is not set
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# CONFIG_LP_TIMER_RK3399 is not set
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# CONFIG_LP_TIMER_CYGNUS is not set
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# CONFIG_LP_TIMER_IMG_PISTACHIO is not set
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# CONFIG_LP_TIMER_MTK is not set
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# CONFIG_LP_TIMER_MVMAP2315 is not set
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CONFIG_LP_TIMER_GENERIC_HZ=0
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CONFIG_LP_TIMER_GENERIC_REG=0x0
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CONFIG_LP_TIMER_GENERIC_HIGH_REG=0x0
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CONFIG_LP_STORAGE=y
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# CONFIG_LP_STORAGE_64BIT_LBA is not set
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CONFIG_LP_STORAGE_ATA=y
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CONFIG_LP_STORAGE_ATAPI=y
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CONFIG_LP_STORAGE_AHCI=y
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CONFIG_LP_STORAGE_AHCI_ONLY_TESTED=y
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CONFIG_LP_USB=y
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CONFIG_LP_USB_UHCI=y
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CONFIG_LP_USB_OHCI=y
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CONFIG_LP_USB_EHCI=y
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CONFIG_LP_USB_XHCI=y
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# CONFIG_LP_USB_XHCI_MTK_QUIRK is not set
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# CONFIG_LP_USB_DWC2 is not set
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CONFIG_LP_USB_HID=y
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CONFIG_LP_USB_HUB=y
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# CONFIG_LP_USB_EHCI_HOSTPC_ROOT_HUB_TT is not set
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CONFIG_LP_USB_MSC=y
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CONFIG_LP_USB_GEN_HUB=y
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CONFIG_LP_USB_PCI=y
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# CONFIG_LP_UDC is not set
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# CONFIG_LP_BIG_ENDIAN is not set
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CONFIG_LP_LITTLE_ENDIAN=y
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CONFIG_LP_IO_ADDRESS_SPACE=y
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CONFIG_LP_ARCH_SPECIFIC_OPTIONS=y
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@ -39,6 +39,13 @@ config CBFS_PREFIX
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Select the prefix to all files put into the image. It's "fallback"
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by default, "normal" is a common alternative.
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config RAMPAYLOAD
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prompt "Enable RAM payload from romstage"
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bool
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default n
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help
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Enable romstage payload loader.
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choice
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prompt "Compiler to use"
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default COMPILER_GCC
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@ -18,5 +18,7 @@
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asmlinkage void copy_and_run(void)
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{
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if (IS_ENABLED(CONFIG_RAMPAYLOAD))
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run_ramprog();
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run_ramstage();
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}
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@ -68,10 +68,10 @@ struct prog {
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void *arg;
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};
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#define PROG_INIT(type_, name_) \
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{ \
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.type = (type_), \
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.name = (name_), \
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#define PROG_INIT(type_, name_) \
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{ \
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.type = (type_), \
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.name = (name_), \
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}
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static inline const char *prog_name(const struct prog *prog)
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@ -120,7 +120,7 @@ static inline void *prog_entry_arg(const struct prog *prog)
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extern const struct mem_region_device addrspace_32bit;
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static inline void prog_memory_init(struct prog *prog, uintptr_t ptr,
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size_t size)
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size_t size)
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{
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rdev_chain(&prog->rdev, &addrspace_32bit.rdev, ptr, size);
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}
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@ -174,8 +174,12 @@ void run_romstage(void);
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/* Run ramstage from romstage. */
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void run_ramstage(void);
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/* Run a prog (stage or payload) from romstage. */
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void run_ramprog(void);
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/* Determine where stack for ramstage loader is located. */
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enum { ROMSTAGE_STACK_CBMEM, ROMSTAGE_STACK_LOW_MEM };
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enum { ROMSTAGE_STACK_CBMEM,
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ROMSTAGE_STACK_LOW_MEM };
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uintptr_t romstage_ram_stack_base(size_t size, int src);
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uintptr_t romstage_ram_stack_top(void);
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uintptr_t romstage_ram_stack_bottom(void);
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@ -111,6 +111,7 @@ smm-$(CONFIG_ARCH_RAMSTAGE_X86_32) += gcc.c
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endif
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romstage-$(CONFIG_GENERIC_UDELAY) += timer.c
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romstage-$(CONFIG_RAMPAYLOAD) += romselfboot.c
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ramstage-y += prog_loaders.c
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ramstage-y += prog_ops.c
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@ -77,9 +77,13 @@ fail:
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}
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void __weak stage_cache_add(int stage_id,
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const struct prog *stage) {}
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const struct prog *stage)
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{
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}
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void __weak stage_cache_load_stage(int stage_id,
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struct prog *stage) {}
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struct prog *stage)
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{
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}
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static void ramstage_cache_invalid(void)
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{
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@ -138,9 +142,7 @@ void run_ramstage(void)
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* Only x86 systems using ramstage stage cache currently take the same
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* firmware path on resume.
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*/
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if (IS_ENABLED(CONFIG_ARCH_X86) &&
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!IS_ENABLED(CONFIG_NO_STAGE_CACHE) &&
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IS_ENABLED(CONFIG_EARLY_CBMEM_INIT))
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if (IS_ENABLED(CONFIG_ARCH_X86) && !IS_ENABLED(CONFIG_NO_STAGE_CACHE) && IS_ENABLED(CONFIG_EARLY_CBMEM_INIT))
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run_ramstage_from_resume(&ramstage);
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if (prog_locate(&ramstage))
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@ -165,6 +167,30 @@ fail:
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die("Ramstage was not loaded!\n");
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}
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/* run_ramprog tries to run CONFIG_CBFS_PREFIX "/rampayload"
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* and returns on failure (or if, unlikely, the payload returns).
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* It does not die, which allows us to run the ramstage. */
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void run_ramprog(void)
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{
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struct prog rampayload = PROG_INIT(PROG_PAYLOAD,
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CONFIG_CBFS_PREFIX "/rampayload");
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timestamp_add_now(TS_END_ROMSTAGE);
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if (prog_locate(&rampayload)) {
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printk(BIOS_ERR,
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"Can't find %s\n", CONFIG_CBFS_PREFIX "/rampayload");
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return;
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}
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if (!selfload(&rampayload, 0)) {
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printk(BIOS_ERR,
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"Can't load %s\n", CONFIG_CBFS_PREFIX "/rampayload");
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return;
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}
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prog_run(&rampayload);
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printk(BIOS_ERR, "rampayload %s returns\n",
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CONFIG_CBFS_PREFIX "/rampayload");
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}
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#ifdef __RAMSTAGE__ // gc-sections should take care of this
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static struct prog global_payload =
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|
@ -212,7 +238,7 @@ void payload_run(void)
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boot_successful();
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printk(BIOS_DEBUG, "Jumping to boot code at %p(%p)\n",
|
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prog_entry(payload), prog_entry_arg(payload));
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prog_entry(payload), prog_entry_arg(payload));
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|
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post_code(POST_ENTER_ELF_BOOT);
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|
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|
|
|
@ -0,0 +1,219 @@
|
|||
/*
|
||||
* This file is part of the coreboot project.
|
||||
*
|
||||
* Copyright (C) 2003 Eric W. Biederman <ebiederm@xmission.com>
|
||||
* Copyright (C) 2009 Ron Minnich <rminnich@gmail.com>
|
||||
* Copyright (C) 2016 George Trudeau <george.trudeau@usherbrooke.ca>
|
||||
*
|
||||
* 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 <commonlib/compression.h>
|
||||
#include <commonlib/endian.h>
|
||||
#include <console/console.h>
|
||||
#include <cpu/cpu.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <symbols.h>
|
||||
#include <cbfs.h>
|
||||
#include <lib.h>
|
||||
#include <bootmem.h>
|
||||
#include <program_loading.h>
|
||||
#include <timestamp.h>
|
||||
|
||||
struct segment {
|
||||
struct segment *next;
|
||||
struct segment *prev;
|
||||
unsigned long s_dstaddr;
|
||||
unsigned long s_srcaddr;
|
||||
unsigned long s_memsz;
|
||||
unsigned long s_filesz;
|
||||
int compression;
|
||||
};
|
||||
|
||||
/* Decode a serialized cbfs payload segment
|
||||
* from memory into native endianness.
|
||||
*/
|
||||
static void cbfs_decode_payload_segment(struct cbfs_payload_segment *segment,
|
||||
const struct cbfs_payload_segment *src)
|
||||
{
|
||||
segment->type = read_be32(&src->type);
|
||||
segment->compression = read_be32(&src->compression);
|
||||
segment->offset = read_be32(&src->offset);
|
||||
segment->load_addr = read_be64(&src->load_addr);
|
||||
segment->len = read_be32(&src->len);
|
||||
segment->mem_len = read_be32(&src->mem_len);
|
||||
}
|
||||
|
||||
static int
|
||||
load_segment(struct segment *ptr)
|
||||
{
|
||||
unsigned char *dest, *src, *end;
|
||||
size_t len, memsz;
|
||||
|
||||
printk(BIOS_DEBUG,
|
||||
"Loading Segment: addr: 0x%016lx memsz: 0x%016lx filesz: 0x%016lx\n",
|
||||
ptr->s_dstaddr, ptr->s_memsz, ptr->s_filesz);
|
||||
/* Compute the boundaries of the segment */
|
||||
dest = (unsigned char *)(ptr->s_dstaddr);
|
||||
src = (unsigned char *)(ptr->s_srcaddr);
|
||||
len = ptr->s_filesz;
|
||||
memsz = ptr->s_memsz;
|
||||
end = dest + memsz;
|
||||
|
||||
switch (ptr->compression) {
|
||||
case CBFS_COMPRESS_LZMA: {
|
||||
printk(BIOS_DEBUG, "using LZMA\n");
|
||||
timestamp_add_now(TS_START_ULZMA);
|
||||
len = ulzman(src, len, dest, memsz);
|
||||
timestamp_add_now(TS_END_ULZMA);
|
||||
if (!len) /* Decompression Error. */
|
||||
return 0;
|
||||
break;
|
||||
}
|
||||
case CBFS_COMPRESS_LZ4: {
|
||||
printk(BIOS_DEBUG, "using LZ4\n");
|
||||
timestamp_add_now(TS_START_ULZ4F);
|
||||
len = ulz4fn(src, len, dest, memsz);
|
||||
timestamp_add_now(TS_END_ULZ4F);
|
||||
if (!len) /* Decompression Error. */
|
||||
return 0;
|
||||
break;
|
||||
}
|
||||
case CBFS_COMPRESS_NONE: {
|
||||
printk(BIOS_DEBUG, "it's not compressed!\n");
|
||||
memcpy(dest, src, len);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
printk(BIOS_INFO, "CBFS: Unknown compression type %d\n",
|
||||
ptr->compression);
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* This loads the payload from a romstage.
|
||||
* This is different than the ramstage payload loader since we don't
|
||||
* check memory regions and we don't use malloc anywhere. It is most like
|
||||
* the LinuxBIOS v3 SELF loader.
|
||||
*/
|
||||
static int load_payload(
|
||||
struct segment *head,
|
||||
struct cbfs_payload *cbfs_payload, uintptr_t *entry)
|
||||
{
|
||||
struct segment *new;
|
||||
struct cbfs_payload_segment *current_segment, *first_segment, segment;
|
||||
struct segment ptr;
|
||||
|
||||
memset(head, 0, sizeof(*head));
|
||||
head->next = head->prev = head;
|
||||
|
||||
first_segment = &cbfs_payload->segments;
|
||||
|
||||
for (current_segment = first_segment;; ++current_segment) {
|
||||
printk(BIOS_DEBUG,
|
||||
"Decoding segment from ROM address 0x%p\n",
|
||||
current_segment);
|
||||
|
||||
cbfs_decode_payload_segment(&segment, current_segment);
|
||||
|
||||
switch (segment.type) {
|
||||
case PAYLOAD_SEGMENT_PARAMS:
|
||||
printk(BIOS_DEBUG, " parameter section (skipped)\n");
|
||||
continue;
|
||||
|
||||
case PAYLOAD_SEGMENT_CODE:
|
||||
case PAYLOAD_SEGMENT_DATA:
|
||||
printk(BIOS_DEBUG, " %s (compression=%x)\n",
|
||||
segment.type == PAYLOAD_SEGMENT_CODE
|
||||
? "code"
|
||||
: "data",
|
||||
segment.compression);
|
||||
|
||||
new = &ptr;
|
||||
new->s_dstaddr = segment.load_addr;
|
||||
new->s_memsz = segment.mem_len;
|
||||
new->compression = segment.compression;
|
||||
new->s_srcaddr = (uintptr_t)((unsigned char *)first_segment)
|
||||
+ segment.offset;
|
||||
new->s_filesz = segment.len;
|
||||
|
||||
printk(BIOS_DEBUG,
|
||||
" New segment dstaddr 0x%lx memsize 0x%lx srcaddr 0x%lx filesize 0x%lx\n",
|
||||
new->s_dstaddr, new->s_memsz, new->s_srcaddr,
|
||||
new->s_filesz);
|
||||
|
||||
/* Clean up the values */
|
||||
if (new->s_filesz > new->s_memsz) {
|
||||
new->s_filesz = new->s_memsz;
|
||||
printk(BIOS_DEBUG,
|
||||
" cleaned up filesize 0x%lx\n",
|
||||
new->s_filesz);
|
||||
}
|
||||
load_segment(new);
|
||||
break;
|
||||
|
||||
case PAYLOAD_SEGMENT_BSS:
|
||||
printk(BIOS_DEBUG, " BSS 0x%p (%d byte)\n", (void *)(intptr_t)segment.load_addr, segment.mem_len);
|
||||
|
||||
new = &ptr;
|
||||
new->s_filesz = 0;
|
||||
new->s_srcaddr = (uintptr_t)((unsigned char *)first_segment)
|
||||
+ segment.offset;
|
||||
new->s_dstaddr = segment.load_addr;
|
||||
new->s_memsz = segment.mem_len;
|
||||
new->compression = CBFS_COMPRESS_NONE;
|
||||
load_segment(new);
|
||||
break;
|
||||
|
||||
case PAYLOAD_SEGMENT_ENTRY:
|
||||
printk(BIOS_DEBUG, " Entry Point 0x%p\n", (void *)(intptr_t)segment.load_addr);
|
||||
|
||||
*entry = segment.load_addr;
|
||||
/* Per definition, a payload always has the entry point
|
||||
* as last segment. Thus, we use the occurrence of the
|
||||
* entry point as break condition for the loop.
|
||||
* Can we actually just look at the number of section?
|
||||
*/
|
||||
return 1;
|
||||
|
||||
default:
|
||||
/* We found something that we don't know about. Throw
|
||||
* hands into the sky and run away!
|
||||
*/
|
||||
printk(BIOS_EMERG, "Bad segment type %x\n",
|
||||
segment.type);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
bool selfload(struct prog *payload, bool check_regions)
|
||||
{
|
||||
uintptr_t entry = 0;
|
||||
struct segment head;
|
||||
void *data;
|
||||
|
||||
data = rdev_mmap_full(prog_rdev(payload));
|
||||
if (data == NULL)
|
||||
return false;
|
||||
|
||||
/* Load the segments */
|
||||
if (!load_payload(&head, data, &entry))
|
||||
return false;
|
||||
|
||||
prog_set_entry(payload, (void *)entry, NULL);
|
||||
printk(BIOS_SPEW, "Loaded segments\n");
|
||||
return true;
|
||||
}
|
Loading…
Reference in New Issue