Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8846
-gerrit
commit 635e90c32c8f9c6cf7794b4139afe2589ec08a17 Author: Aaron Durbin adurbin@chromium.org Date: Fri Mar 20 15:55:08 2015 -0500
program loading: add prog_run() function
The prog_run() function abstracts away what is required for running a given program. Within it, there are 2 calls: 1. platform_prog_run() and 2. arch_prog_run(). The platform_prog_run() allows for a chipset to intercept a program that will be run. This allows for CPU switching as currently needed in t124 and t132.
Change-Id: I22a5dd5bfb1018e7e46475e47ac993a0941e2a8c Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/arch/arm/Makefile.inc | 2 ++ src/arch/arm/boot.c | 11 +++++++--- src/arch/arm64/Makefile.inc | 2 ++ src/arch/arm64/boot.c | 27 ++++++++++++++++++++--- src/arch/mips/boot.c | 9 ++++++-- src/arch/riscv/Makefile.inc | 2 ++ src/arch/riscv/boot.c | 14 ++++++++---- src/arch/x86/boot/Makefile.inc | 1 + src/arch/x86/boot/boot.c | 10 ++++++++- src/include/program_loading.h | 12 +++++++++- src/lib/Makefile.inc | 8 +++---- src/lib/arch_ops.c | 28 ----------------------- src/lib/loaders/load_and_run_payload.c | 2 +- src/lib/loaders/load_and_run_ramstage.c | 4 ++-- src/lib/loaders/load_and_run_romstage.c | 2 +- src/lib/prog_ops.c | 39 +++++++++++++++++++++++++++++++++ 16 files changed, 123 insertions(+), 50 deletions(-)
diff --git a/src/arch/arm/Makefile.inc b/src/arch/arm/Makefile.inc index 25f764c..b331f4b 100644 --- a/src/arch/arm/Makefile.inc +++ b/src/arch/arm/Makefile.inc @@ -54,6 +54,7 @@ ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARM),y) bootblock-y += id.S $(obj)/arch/arm/id.bootblock.o: $(obj)/build.h
+bootblock-y += boot.c bootblock-y += stages.c bootblock-y += eabi_compat.c bootblock-y += memset.S @@ -89,6 +90,7 @@ verstage-y += stages.c
ifeq ($(CONFIG_ARCH_ROMSTAGE_ARM),y)
+romstage-y += boot.c romstage-y += stages.c romstage-y += div0.c romstage-y += eabi_compat.c diff --git a/src/arch/arm/boot.c b/src/arch/arm/boot.c index 9dc6dbd..6a2934b 100644 --- a/src/arch/arm/boot.c +++ b/src/arch/arm/boot.c @@ -20,12 +20,17 @@ #include <arch/cache.h> #include <program_loading.h>
-void arch_payload_run(const struct payload *payload) +void arch_prog_run(struct prog *prog) { void (*doit)(void *);
cache_sync_instructions();
- doit = prog_entry(&payload->prog); - doit(prog_entry_arg(&payload->prog)); + doit = prog_entry(prog); + doit(prog_entry_arg(prog)); +} + +void arch_payload_run(struct payload *payload) +{ + arch_prog_run(&payload->prog); } diff --git a/src/arch/arm64/Makefile.inc b/src/arch/arm64/Makefile.inc index 6d23dab..c1f1112 100644 --- a/src/arch/arm64/Makefile.inc +++ b/src/arch/arm64/Makefile.inc @@ -57,6 +57,7 @@ bootblock-y += div0.c bootblock-y += id.S $(obj)/arch/arm64/id.bootblock.o: $(obj)/build.h
+bootblock-y += boot.c bootblock-y += c_entry.c bootblock-y += stage_entry.S bootblock-y += stages.c @@ -81,6 +82,7 @@ endif # CONFIG_ARCH_BOOTBLOCK_ARM64
ifeq ($(CONFIG_ARCH_ROMSTAGE_ARM64),y)
+romstage-y += boot.c romstage-y += c_entry.c romstage-y += stage_entry.S romstage-y += stages.c diff --git a/src/arch/arm64/boot.c b/src/arch/arm64/boot.c index 74282a9..b5e3751 100644 --- a/src/arch/arm64/boot.c +++ b/src/arch/arm64/boot.c @@ -25,15 +25,16 @@ #include <arch/transition.h> #include <console/console.h> #include <program_loading.h> +#include <rules.h> #include <string.h>
-void arch_payload_run(const struct payload *payload) +static void run_payload(struct prog *prog) { void (*doit)(void *); void *arg;
- doit = prog_entry(&payload->prog); - arg = prog_entry_arg(&payload->prog); + doit = prog_entry(prog); + arg = prog_entry_arg(prog);
uint8_t current_el = get_current_el();
@@ -61,3 +62,23 @@ void arch_payload_run(const struct payload *payload) cache_sync_instructions(); transition_with_entry(doit, arg, &exc_state); } + +void arch_prog_run(struct prog *prog) +{ + void (*doit)(void *); + void *arg; + + if (ENV_RAMSTAGE && prog->type == PROG_PAYLOAD) + run_payload(prog); + return; + + doit = prog_entry(prog); + arg = prog_entry_arg(prog); + + doit(prog_entry_arg(prog)); +} + +void arch_payload_run(struct payload *payload) +{ + arch_prog_run(&payload->prog); +} diff --git a/src/arch/mips/boot.c b/src/arch/mips/boot.c index 6e12d10..ebc45bb 100644 --- a/src/arch/mips/boot.c +++ b/src/arch/mips/boot.c @@ -20,7 +20,12 @@ #include <arch/stages.h> #include <program_loading.h>
-void arch_payload_run(const struct payload *payload) +void arch_prog_run(struct prog *prog) { - stage_exit(prog_entry(&payload->prog)); + stage_exit(prog_entry(prog)); +} + +void arch_payload_run(struct payload *payload) +{ + arch_prog_run(&payload->prog); } diff --git a/src/arch/riscv/Makefile.inc b/src/arch/riscv/Makefile.inc index 242fd40..30c84a9 100644 --- a/src/arch/riscv/Makefile.inc +++ b/src/arch/riscv/Makefile.inc @@ -31,6 +31,7 @@ ifeq ($(CONFIG_ARCH_BOOTBLOCK_RISCV),y) bootblock_lds = $(src)/arch/riscv/bootblock.ld
bootblock-y = bootblock.S stages.c +bootblock-y += boot.c bootblock-y += rom_media.c bootblock-y += \ $(top)/src/lib/memchr.c \ @@ -52,6 +53,7 @@ endif ################################################################################ ifeq ($(CONFIG_ARCH_ROMSTAGE_RISCV),y)
+romstage-y += boot.c romstage-y += stages.c romstage-y += rom_media.c romstage-y += \ diff --git a/src/arch/riscv/boot.c b/src/arch/riscv/boot.c index 4c2be03..f66c02f 100644 --- a/src/arch/riscv/boot.c +++ b/src/arch/riscv/boot.c @@ -17,11 +17,17 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
-#include <arch/stages.h> #include <program_loading.h>
-void arch_payload_run(const struct payload *payload) +void arch_prog_run(struct prog *prog) { -// uart_rx_byte(0); - stage_exit(prog_entry(&payload->prog)); + void (*doit)(void *); + + doit = prog_entry(prog); + doit(prog_entry_arg(prog)); +} + +void arch_payload_run(struct payload *payload) +{ + arch_prog_run(&payload->prog); } diff --git a/src/arch/x86/boot/Makefile.inc b/src/arch/x86/boot/Makefile.inc index 9f06b4f..7810ba8 100644 --- a/src/arch/x86/boot/Makefile.inc +++ b/src/arch/x86/boot/Makefile.inc @@ -2,6 +2,7 @@ ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32),y)
romstage-y += cbmem.c +romstage-y += boot.c
endif # CONFIG_ARCH_ROMSTAGE_X86_32
diff --git a/src/arch/x86/boot/boot.c b/src/arch/x86/boot/boot.c index 1fb36e2..d536584 100644 --- a/src/arch/x86/boot/boot.c +++ b/src/arch/x86/boot/boot.c @@ -123,7 +123,7 @@ static void jmp_payload(void *entry, unsigned long buffer, unsigned long size) ); }
-void arch_payload_run(const struct payload *payload) +void arch_payload_run(struct payload *payload) { if (IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE)) jmp_payload_no_bounce_buffer(prog_entry(&payload->prog)); @@ -132,3 +132,11 @@ void arch_payload_run(const struct payload *payload) (uintptr_t)payload->bounce.data, payload->bounce.size); } + +void arch_prog_run(struct prog *prog) +{ + __asm__ volatile ( + "jmp *%%edi\n" + :: "D"(prog_entry(prog)) + ); +} diff --git a/src/include/program_loading.h b/src/include/program_loading.h index 38047c7..1df1825 100644 --- a/src/include/program_loading.h +++ b/src/include/program_loading.h @@ -90,6 +90,16 @@ static inline void prog_set_entry(struct prog *prog, void *e, void *arg) prog->arg = arg; }
+/* Run the program described by prog. */ +void prog_run(struct prog *prog); +/* Per architecture implementation running a program. */ +void arch_prog_run(struct prog *prog); +/* Platform (SoC/chipset) specific overrides for running a program. This is + * called prior to calling the arch_prog_run. Thus, if there is anything + * special that needs to be done by the platform similar to the architecture + * code it needs to that as well. */ +void platform_prog_run(struct prog *prog); + /************************ * ROMSTAGE LOADING * ************************/ @@ -143,7 +153,7 @@ void payload_run(void); void mirror_payload(struct payload *payload);
/* architecture specific function to run payload. */ -void arch_payload_run(const struct payload *payload); +void arch_payload_run(struct payload *payload);
/* Payload loading operations. */ struct payload_loader_ops { diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 67cf577..5f149c9 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -18,7 +18,7 @@ # subdirs-y += loaders
-bootblock-y += arch_ops.c +bootblock-y += prog_ops.c bootblock-y += cbfs.c cbfs_core.c bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
@@ -26,7 +26,7 @@ bootblock-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c bootblock-y += memchr.c bootblock-y += memcmp.c
-verstage-y += arch_ops.c +verstage-y += prog_ops.c verstage-y += delay.c verstage-y += cbfs.c verstage-y += memcmp.c @@ -35,7 +35,7 @@ verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c verstage-y += tlcl.c verstage-$(CONFIG_GENERIC_UDELAY) += timer.c
-romstage-y += arch_ops.c +romstage-y += prog_ops.c romstage-y += memchr.c romstage-y += memcmp.c $(foreach arch,$(ARCH_SUPPORTED),\ @@ -60,7 +60,7 @@ romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += gcc.c ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += gcc.c endif
-ramstage-y += arch_ops.c +ramstage-y += prog_ops.c ramstage-y += hardwaremain.c ramstage-y += selfboot.c ramstage-y += coreboot_table.c diff --git a/src/lib/arch_ops.c b/src/lib/arch_ops.c deleted file mode 100644 index ac1be77..0000000 --- a/src/lib/arch_ops.c +++ /dev/null @@ -1,28 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Imagination Technologies - * Copyright 2015 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. - * - * 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 <program_loading.h> - -/* For each segment of a program loaded this function is called*/ -void __attribute__ ((weak)) arch_segment_loaded(uintptr_t start, size_t size, - int flags) -{ - /* do nothing */ -} diff --git a/src/lib/loaders/load_and_run_payload.c b/src/lib/loaders/load_and_run_payload.c index 8e745c9..e3208a9 100644 --- a/src/lib/loaders/load_and_run_payload.c +++ b/src/lib/loaders/load_and_run_payload.c @@ -83,7 +83,7 @@ out:
void payload_run(void) { - const struct payload *payload = &global_payload; + struct payload *payload = &global_payload;
/* Reset to booting from this image as late as possible */ boot_successful(); diff --git a/src/lib/loaders/load_and_run_ramstage.c b/src/lib/loaders/load_and_run_ramstage.c index 82bc1e0..9067a28 100644 --- a/src/lib/loaders/load_and_run_ramstage.c +++ b/src/lib/loaders/load_and_run_ramstage.c @@ -48,7 +48,7 @@ load_ramstage(const struct ramstage_loader_ops *ops,
timestamp_add_now(TS_END_COPYRAM);
- stage_exit(prog_entry(ramstage)); + prog_run(ramstage); }
static void run_ramstage_from_resume(struct romstage_handoff *handoff, @@ -60,7 +60,7 @@ static void run_ramstage_from_resume(struct romstage_handoff *handoff,
if (prog_entry(ramstage) != NULL) { printk(BIOS_DEBUG, "Jumping to image.\n"); - stage_exit(prog_entry(ramstage)); + prog_run(ramstage); } } } diff --git a/src/lib/loaders/load_and_run_romstage.c b/src/lib/loaders/load_and_run_romstage.c index 3ad9176..8467e90 100644 --- a/src/lib/loaders/load_and_run_romstage.c +++ b/src/lib/loaders/load_and_run_romstage.c @@ -38,5 +38,5 @@ void run_romstage(void) halt(); }
- stage_exit(prog_entry(&romstage)); + prog_run(&romstage); } diff --git a/src/lib/prog_ops.c b/src/lib/prog_ops.c new file mode 100644 index 0000000..755b135 --- /dev/null +++ b/src/lib/prog_ops.c @@ -0,0 +1,39 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Imagination Technologies + * Copyright 2015 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. + * + * 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 <program_loading.h> + +/* For each segment of a program loaded this function is called*/ +void __attribute__ ((weak)) arch_segment_loaded(uintptr_t start, size_t size, + int flags) +{ + /* do nothing */ +} + +void prog_run(struct prog *prog) +{ + platform_prog_run(prog); + arch_prog_run(prog); +} + +void __attribute__ ((weak)) platform_prog_run(struct prog *prog) +{ + /* do nothing */ +}