Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8625
-gerrit
commit 50a476e1b75f19795a38ee770823005c49d7260c Author: Aaron Durbin adurbin@chromium.org Date: Fri Mar 6 23:17:33 2015 -0600
coreboot: common stage cache
Many chipsets were using a stage cache for reference code or when using a relocatable ramstage. Provide a common API for the chipsets to use while reducing code duplication.
Change-Id: Ia36efa169fe6bd8a3dbe07bf57a9729c7edbdd46 Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/cpu/intel/haswell/romstage.c | 26 +++-- src/include/cbfs.h | 3 +- src/include/cbmem.h | 2 + src/include/program_loading.h | 14 +-- src/include/ramstage_cache.h | 53 ---------- src/include/romstage_handoff.h | 4 - src/include/stage_cache.h | 49 +++++++++ src/lib/Makefile.inc | 9 +- src/lib/cbmem_stage_cache.c | 76 ++++++++++++++ src/lib/ext_stage_cache.c | 122 +++++++++++++++++++++++ src/lib/loaders/load_and_run_ramstage.c | 23 +++-- src/lib/ramstage_cache.c | 149 ---------------------------- src/soc/intel/baytrail/refcode.c | 57 +---------- src/soc/intel/baytrail/romstage/raminit.c | 17 ++-- src/soc/intel/baytrail/romstage/romstage.c | 6 +- src/soc/intel/baytrail/stage_cache.c | 6 +- src/soc/intel/broadwell/refcode.c | 57 +---------- src/soc/intel/broadwell/romstage/raminit.c | 13 ++- src/soc/intel/broadwell/romstage/romstage.c | 5 +- src/soc/intel/broadwell/stage_cache.c | 6 +- 20 files changed, 330 insertions(+), 367 deletions(-)
diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c index 50150cf..b8c455b 100644 --- a/src/cpu/intel/haswell/romstage.c +++ b/src/cpu/intel/haswell/romstage.c @@ -19,6 +19,7 @@
#include <stdint.h> #include <string.h> +#include <cbfs.h> #include <cbmem.h> #include <console/console.h> #include <arch/cpu.h> @@ -33,9 +34,9 @@ #include <device/pci_def.h> #include <cpu/x86/lapic.h> #include <cbfs.h> -#include <ramstage_cache.h> #include <romstage_handoff.h> #include <reset.h> +#include <stage_cache.h> #include <vendorcode/google/chromeos/chromeos.h> #if CONFIG_EC_GOOGLE_CHROMEEC #include <ec/google/chromeec/ec.h> @@ -256,13 +257,17 @@ void romstage_common(const struct romstage_params *params)
if (!wake_from_s3) { cbmem_initialize_empty(); + stage_cache_create_empty(); /* Save data returned from MRC on non-S3 resumes. */ save_mrc_data(params->pei_data); - } else if (cbmem_initialize()) { - #if CONFIG_HAVE_ACPI_RESUME - /* Failed S3 resume, reset to come up cleanly */ - reset_system(); - #endif + } else { + stage_cache_recover(); + if (cbmem_initialize()) { + #if CONFIG_HAVE_ACPI_RESUME + /* Failed S3 resume, reset to come up cleanly */ + reset_system(); + #endif + } }
handoff = romstage_handoff_find_or_add(); @@ -307,18 +312,17 @@ void romstage_after_car(void) }
-#if CONFIG_RELOCATABLE_RAMSTAGE -#include <ramstage_cache.h> +#if IS_ENABLED(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM)
-struct ramstage_cache *ramstage_cache_location(long *size) +void stage_cache_external_region(void **base, size_t *size) { /* The ramstage cache lives in the TSEG region at RESERVED_SMM_OFFSET. * The top of ram is defined to be the TSEG base address. */ *size = RESERVED_SMM_SIZE; - return (void *)((uint32_t)cbmem_top() + RESERVED_SMM_OFFSET); + *base = (void *)((uint32_t)cbmem_top() + RESERVED_SMM_OFFSET); }
-void ramstage_cache_invalid(struct ramstage_cache *cache) +void ramstage_cache_invalid(void) { #if CONFIG_RESET_ON_INVALID_RAMSTAGE_CACHE reset_system(); diff --git a/src/include/cbfs.h b/src/include/cbfs.h index fcc55b5..84fe251 100644 --- a/src/include/cbfs.h +++ b/src/include/cbfs.h @@ -2,7 +2,7 @@ * This file is part of the coreboot project. * * Copyright (C) 2008 Jordan Crouse jordan@cosmicpenguin.net - * Copyright (C) 2013 The Chromium OS Authors. All rights reserved. + * Copyright (C) 2013-2015 Google, Inc. * * This file is dual-licensed. You can choose between: * - The GNU GPL, version 2, as published by the Free Software Foundation @@ -80,4 +80,3 @@ void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer, int init_default_cbfs_media(struct cbfs_media *media);
#endif - diff --git a/src/include/cbmem.h b/src/include/cbmem.h index 9b3ca7d..7b74237 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -79,6 +79,8 @@ #define CBMEM_ID_HOB_POINTER 0x484f4221 #define CBMEM_ID_IMD_ROOT 0xff4017ff #define CBMEM_ID_IMD_SMALL 0x53a11439 +#define CBMEM_ID_STAGEx_META 0x57a9e000 +#define CBMEM_ID_STAGEx_CACHE 0x57a9e100
#ifndef __ASSEMBLER__ #include <stddef.h> diff --git a/src/include/program_loading.h b/src/include/program_loading.h index 2699887..02e6f5f 100644 --- a/src/include/program_loading.h +++ b/src/include/program_loading.h @@ -123,18 +123,8 @@ void run_romstage(void); /* Run ramstage from romstage. */ void run_ramstage(void);
-struct romstage_handoff; -#if IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE) -/* Cache the loaded ramstage described by prog. */ -void cache_loaded_ramstage(struct romstage_handoff *, struct prog *p); -/* Load ramstage from cache filling in struct prog. */ -void load_cached_ramstage(struct romstage_handoff *h, struct prog *p); -#else -static inline void cache_loaded_ramstage(struct romstage_handoff *h, - struct prog *p) {} -static inline void load_cached_ramstage(struct romstage_handoff *h, - struct prog *p) {} -#endif +/* Called when the stage cache couldn't load ramstage on resume. */ +void ramstage_cache_invalid(void);
/*********************** * PAYLOAD LOADING * diff --git a/src/include/ramstage_cache.h b/src/include/ramstage_cache.h deleted file mode 100644 index 8d9b095..0000000 --- a/src/include/ramstage_cache.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 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. - * - * 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 - */ - -#ifndef _RAMSTAGE_CACHE_ -#define _RAMSTAGE_CACHE_ - -#include <stddef.h> -#include <stdint.h> - -/* This structure is saved along with the relocated ramstage program when - * CONFIG_RELOCATED_RAMSTAGE is employed. For x86, it can used to protect - * the integrity of the ramstage program on S3 resume by saving a copy of - * the relocated ramstage in SMM space with the assumption that the SMM region - * cannot be altered from the OS. The magic value just serves as a quick sanity - * check. */ - -#define RAMSTAGE_CACHE_MAGIC 0xf3c3a02a - -struct ramstage_cache { - uint32_t magic; - uint32_t entry_point; - uint32_t load_address; - uint32_t size; - char program[0]; -} __attribute__((packed)); - -/* Chipset/Board function for obtaining cache location and size. */ -struct ramstage_cache *ramstage_cache_location(long *size); -/* Chipset/Board function called when cache is invalid on resume. */ -void ramstage_cache_invalid(struct ramstage_cache *cache); - -static inline int ramstage_cache_is_valid(const struct ramstage_cache *c) -{ - return (c != NULL && c->magic == RAMSTAGE_CACHE_MAGIC); -} - -#endif /* _RAMSTAGE_CACHE_ */ diff --git a/src/include/romstage_handoff.h b/src/include/romstage_handoff.h index 307babd..679633d 100644 --- a/src/include/romstage_handoff.h +++ b/src/include/romstage_handoff.h @@ -34,10 +34,6 @@ struct romstage_handoff { * will be re-loaded from cbfs (which can be slower since it lives * in flash). */ uint32_t s3_resume; - /* The ramstage_entry_point is cached in the stag loading path. This - * cached value can only be utilized when the chipset code properly - * fills in the s3_resume field above. */ - uint32_t ramstage_entry_point; };
#if defined(__PRE_RAM__) diff --git a/src/include/stage_cache.h b/src/include/stage_cache.h new file mode 100644 index 0000000..fef512e --- /dev/null +++ b/src/include/stage_cache.h @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * 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 + */ + +#ifndef _STAGE_CACHE_H_ +#define _STAGE_CACHE_H_ + +#include <stddef.h> +#include <stdint.h> +#include <program_loading.h> + +enum { + STAGE_RAMSTAGE, + STAGE_REFCODE, +}; + +/* Create an empty stage cache. */ +void stage_cache_create_empty(void); +/* Recover existing stage cache. */ +void stage_cache_recover(void); +/* Cache the loaded stage provided according to the parameters. */ +void stage_cache_add(int stage_id, struct prog *stage); +/* Load the cached stage at given location returning the stage entry point. */ +void stage_cache_load_stage(int stage_id, struct prog *stage); +/* Fill in parameters for the external stage cache, if utilized. */ +void stage_cache_external_region(void **base, size_t *size); + +/* Metadata associated with each stage. */ +struct stage_cache { + uint64_t load_addr; + uint64_t entry_addr; +}; + +#endif /* _STAGE_CACHE_H_ */ diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index f49cf8b..4205b1a 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -106,7 +106,14 @@ romstage-y += hexdump.c romstage-$(CONFIG_REG_SCRIPT) += reg_script.c ramstage-$(CONFIG_REG_SCRIPT) += reg_script.c
-romstage-$(CONFIG_RELOCATABLE_RAMSTAGE) += ramstage_cache.c +ifeq ($(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM),y) +ramstage-y += ext_stage_cache.c +romstage-y += ext_stage_cache.c +else +ramstage-$(CONFIG_RELOCATABLE_RAMSTAGE) += cbmem_stage_cache.c +romstage-$(CONFIG_RELOCATABLE_RAMSTAGE) += cbmem_stage_cache.c +endif +
smm-y += cbfs.c cbfs_core.c memcmp.c smm-$(CONFIG_COMPILER_GCC) += gcc.c diff --git a/src/lib/cbmem_stage_cache.c b/src/lib/cbmem_stage_cache.c new file mode 100644 index 0000000..59ac6e4 --- /dev/null +++ b/src/lib/cbmem_stage_cache.c @@ -0,0 +1,76 @@ +/* + * This file is part of the coreboot project. + * + * 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 <arch/early_variables.h> +#include <cbmem.h> +#include <stage_cache.h> +#include <string.h> + + +/* Provide empty implementations by default. */ +void __attribute__((weak)) stage_cache_create_empty(void) {} +void __attribute__((weak)) stage_cache_recover(void) {} + +/* Stage cache uses cbmem. */ +void stage_cache_add(int stage_id, struct prog *stage) +{ + struct stage_cache *meta; + void *c; + + meta = cbmem_add(CBMEM_ID_STAGEx_META + stage_id, sizeof(*meta)); + if (meta == NULL) + return; + meta->load_addr = (uintptr_t)prog_start(stage); + meta->entry_addr = (uintptr_t)prog_entry(stage); + + c = cbmem_add(CBMEM_ID_STAGEx_CACHE + stage_id, prog_size(stage)); + if (c == NULL) + return; + + memcpy(c, prog_start(stage), prog_size(stage)); +} + +void stage_cache_load_stage(int stage_id, struct prog *stage) +{ + struct stage_cache *meta; + const struct cbmem_entry *e; + void *c; + size_t size; + void *load_addr; + + prog_set_entry(stage, NULL, NULL); + + meta = cbmem_find(CBMEM_ID_STAGEx_META + stage_id); + if (meta == NULL) + return; + + e = cbmem_entry_find(CBMEM_ID_STAGEx_CACHE + stage_id); + + if (e == NULL) + return; + + c = cbmem_entry_start(e); + size = cbmem_entry_size(e); + load_addr = (void *)(uintptr_t)meta->load_addr; + + memcpy(load_addr, c, size); + + prog_set_area(stage, load_addr, size); + prog_set_entry(stage, (void *)(uintptr_t)meta->entry_addr, NULL); +} diff --git a/src/lib/ext_stage_cache.c b/src/lib/ext_stage_cache.c new file mode 100644 index 0000000..1539270 --- /dev/null +++ b/src/lib/ext_stage_cache.c @@ -0,0 +1,122 @@ +/* + * This file is part of the coreboot project. + * + * 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 <arch/early_variables.h> +#include <bootstate.h> +#include <cbmem.h> +#include <imd.h> +#include <rules.h> +#include <stage_cache.h> +#include <string.h> + +static struct imd imd_stage_cache CAR_GLOBAL = { }; + +static inline struct imd *imd_get(void) +{ + return car_get_var_ptr(&imd_stage_cache); +} + +static struct imd *sc_imd_init(void) +{ + struct imd *imd; + void *base; + size_t size; + + imd = imd_get(); + stage_cache_external_region(&base, &size); + imd_handle_init(imd, (void *)(size + (uintptr_t)base)); + + return imd; +} + +void stage_cache_create_empty(void) +{ + imd_create_tiered_empty(sc_imd_init(), 4096, 4096, 1024, 32); +} + +void stage_cache_recover(void) +{ + imd_recover(sc_imd_init()); +} + +void stage_cache_add(int stage_id, struct prog *stage) +{ + struct imd *imd; + const struct imd_entry *e; + struct stage_cache *meta; + void *c; + + imd = imd_get(); + e = imd_entry_add(imd, CBMEM_ID_STAGEx_META + stage_id, sizeof(*meta)); + + if (e == NULL) + return; + + meta = imd_entry_at(imd, e); + + meta->load_addr = (uintptr_t)prog_start(stage); + meta->entry_addr = (uintptr_t)prog_entry(stage); + + e = imd_entry_add(imd, CBMEM_ID_STAGEx_CACHE + stage_id, + prog_size(stage)); + + if (e == NULL) + return; + + c = imd_entry_at(imd, e); + + memcpy(c, prog_start(stage), prog_size(stage)); +} + +void stage_cache_load_stage(int stage_id, struct prog *stage) +{ + struct imd *imd; + struct stage_cache *meta; + const struct imd_entry *e; + void *c; + size_t size; + + imd = imd_get(); + e = imd_entry_find(imd, CBMEM_ID_STAGEx_META + stage_id); + if (e == NULL) + return; + + meta = imd_entry_at(imd, e); + + e = imd_entry_find(imd, CBMEM_ID_STAGEx_CACHE + stage_id); + + if (e == NULL) + return; + + c = imd_entry_at(imd, e); + size = imd_entry_size(imd, e); + + memcpy((void *)(uintptr_t)meta->load_addr, c, size); + + prog_set_area(stage, (void *)(uintptr_t)meta->load_addr, size); + prog_set_entry(stage, (void *)(uintptr_t)meta->entry_addr, NULL); +} + +#if ENV_RAMSTAGE +static void recover_sc(void *unused) +{ + stage_cache_recover(); +} +BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_ENTRY, recover_sc, NULL); +#endif diff --git a/src/lib/loaders/load_and_run_ramstage.c b/src/lib/loaders/load_and_run_ramstage.c index b3728a1..153e38e 100644 --- a/src/lib/loaders/load_and_run_ramstage.c +++ b/src/lib/loaders/load_and_run_ramstage.c @@ -23,6 +23,7 @@ #include <cbfs.h> #include <program_loading.h> #include <romstage_handoff.h> +#include <stage_cache.h> #include <timestamp.h>
extern const struct prog_loader_ops cbfs_ramstage_loader; @@ -35,16 +36,20 @@ static const struct prog_loader_ops *loaders[] = { &cbfs_ramstage_loader, };
-static void -load_ramstage(const struct prog_loader_ops *ops, - struct romstage_handoff *handoff, struct prog *ramstage) +void __attribute__((weak)) stage_cache_add(int stage_id, struct prog *stage) {} +void __attribute__((weak)) stage_cache_load_stage(int stage_id, + struct prog *stage) {} +void __attribute__((weak)) ramstage_cache_invalid(void) {} + +static void load_ramstage(const struct prog_loader_ops *ops, + struct prog *ramstage) { timestamp_add_now(TS_START_COPYRAM);
if (ops->prepare(ramstage)) return;
- cache_loaded_ramstage(handoff, ramstage); + stage_cache_add(STAGE_RAMSTAGE, ramstage);
timestamp_add_now(TS_END_COPYRAM);
@@ -56,18 +61,18 @@ static void run_ramstage_from_resume(struct romstage_handoff *handoff, { if (handoff != NULL && handoff->s3_resume) { /* Load the cached ramstage to runtime location. */ - load_cached_ramstage(handoff, ramstage); + stage_cache_load_stage(STAGE_RAMSTAGE, ramstage);
if (prog_entry(ramstage) != NULL) { printk(BIOS_DEBUG, "Jumping to image.\n"); prog_run(ramstage); } + ramstage_cache_invalid(); } }
void run_ramstage(void) { - struct romstage_handoff *handoff; const struct prog_loader_ops *ops; int i; struct prog ramstage = { @@ -75,14 +80,12 @@ void run_ramstage(void) .type = PROG_RAMSTAGE, };
- handoff = romstage_handoff_find_or_add(); - - run_ramstage_from_resume(handoff, &ramstage); + run_ramstage_from_resume(romstage_handoff_find_or_add(), &ramstage);
for (i = 0; i < ARRAY_SIZE(loaders); i++) { ops = loaders[i]; printk(BIOS_DEBUG, "Trying %s ramstage loader.\n", ops->name); - load_ramstage(ops, handoff, &ramstage); + load_ramstage(ops, &ramstage); }
die("Ramstage was not loaded!\n"); diff --git a/src/lib/ramstage_cache.c b/src/lib/ramstage_cache.c deleted file mode 100644 index 1dd40c7..0000000 --- a/src/lib/ramstage_cache.c +++ /dev/null @@ -1,149 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 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. - * - * 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 <stddef.h> -#include <string.h> -#include <console/console.h> -#include <program_loading.h> -#include <ramstage_cache.h> -#include <romstage_handoff.h> - -#if CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM - -void cache_loaded_ramstage(struct romstage_handoff *handoff, - struct prog *ramstage) -{ - struct ramstage_cache *cache; - uint32_t total_size; - uint32_t ramstage_size; - void *ramstage_base; - long cache_size = 0; - - ramstage_size = prog_size(ramstage); - ramstage_base = prog_start(ramstage); - - cache = ramstage_cache_location(&cache_size); - - if (cache == NULL) { - printk(BIOS_DEBUG, "No ramstage cache location provided.\n"); - return; - } - - total_size = sizeof(*cache) + ramstage_size; - if (total_size > cache_size) { - printk(BIOS_DEBUG, "cache size too small: 0x%08x > 0x%08lx\n", - total_size, cache_size); - /* Nuke whatever may be there now just in case. */ - cache->magic = ~RAMSTAGE_CACHE_MAGIC; - return; - } - - cache->magic = RAMSTAGE_CACHE_MAGIC; - cache->entry_point = (uint32_t)prog_entry(ramstage); - cache->load_address = (uint32_t)ramstage_base; - cache->size = ramstage_size; - - printk(BIOS_DEBUG, "Saving ramstage to %p.\n", cache); - - /* Copy over the program. */ - memcpy(&cache->program[0], ramstage_base, ramstage_size); - - if (handoff == NULL) - return; - - handoff->ramstage_entry_point = cache->entry_point; -} - -void load_cached_ramstage(struct romstage_handoff *handoff, - struct prog *ramstage) -{ - struct ramstage_cache *cache; - long size = 0; - - cache = ramstage_cache_location(&size); - - if (!ramstage_cache_is_valid(cache)) { - printk(BIOS_DEBUG, "Invalid ramstage cache found.\n"); - ramstage_cache_invalid(cache); - return; - } - - printk(BIOS_DEBUG, "Loading ramstage from %p.\n", cache); - - prog_set_area(ramstage, (void *)cache->load_address, cache->size); - prog_set_entry(ramstage, (void *)cache->entry_point, NULL); - - memcpy((void *)cache->load_address, &cache->program[0], cache->size); -} - -#else - -/* Cache relocated ramstage in CBMEM. */ - -void cache_loaded_ramstage(struct romstage_handoff *handoff, - struct prog *ramstage) -{ - uint32_t ramstage_size; - const struct cbmem_entry *entry; - - if (handoff == NULL) - return; - - ramstage_size = prog_size(ramstage); - /* cbmem_entry_add() does a find() before add(). */ - entry = cbmem_entry_add(CBMEM_ID_RAMSTAGE_CACHE, ramstage_size); - - if (entry == NULL) - return; - - /* Keep track of the entry point in the handoff structure. */ - handoff->ramstage_entry_point = (uint32_t)prog_entry(ramstage); - - memcpy(cbmem_entry_start(entry), prog_start(ramstage), ramstage_size); -} - -void load_cached_ramstage(struct romstage_handoff *handoff, - struct prog *ramstage) -{ - const struct cbmem_entry *entry_cache; - const struct cbmem_entry *entry_dest; - - if (handoff == NULL) - return; - - entry_cache = cbmem_entry_find(CBMEM_ID_RAMSTAGE_CACHE); - - if (entry_cache == NULL) - return; - - entry_dest = cbmem_entry_find(CBMEM_ID_RAMSTAGE); - - if (entry_dest == NULL) - return; - - prog_set_area(ramstage, cbmem_entry_start(entry_dest), - cbmem_entry_size(entry_dest)); - prog_set_entry(ramstage, (void *)handoff->ramstage_entry_point, NULL); - - /* Load the cached ramstage copy into the to-be-run region. */ - memcpy(prog_start(ramstage), cbmem_entry_start(entry_cache), - prog_size(ramstage)); -} - -#endif diff --git a/src/soc/intel/baytrail/refcode.c b/src/soc/intel/baytrail/refcode.c index 45771e0..6c89d00 100644 --- a/src/soc/intel/baytrail/refcode.c +++ b/src/soc/intel/baytrail/refcode.c @@ -25,7 +25,7 @@ #include <cpu/x86/tsc.h> #include <program_loading.h> #include <rmodule.h> -#include <ramstage_cache.h> +#include <stage_cache.h> #if IS_ENABLED(CONFIG_CHROMEOS) #include <vendorcode/google/chromeos/vboot_handoff.h> #endif @@ -33,11 +33,6 @@ #include <baytrail/ramstage.h> #include <baytrail/efi_wrapper.h>
-static inline struct ramstage_cache *next_cache(struct ramstage_cache *c) -{ - return (struct ramstage_cache *)&c->program[c->size]; -} - static void ABI_X86 send_to_console(unsigned char b) { console_tx_byte(b); @@ -45,60 +40,18 @@ static void ABI_X86 send_to_console(unsigned char b)
static efi_wrapper_entry_t load_refcode_from_cache(void) { - struct ramstage_cache *c; - long cache_size; + struct prog refcode;
printk(BIOS_DEBUG, "refcode loading from cache.\n");
- c = ramstage_cache_location(&cache_size); - - if (!ramstage_cache_is_valid(c)) { - printk(BIOS_DEBUG, "Invalid ramstage cache descriptor.\n"); - return NULL; - } + stage_cache_load_stage(STAGE_REFCODE, &refcode);
- c = next_cache(c); - if (!ramstage_cache_is_valid(c)) { - printk(BIOS_DEBUG, "Invalid refcode cache descriptor.\n"); - return NULL; - } - - printk(BIOS_DEBUG, "Loading cached reference code from 0x%08x(%x)\n", - c->load_address, c->size); - memcpy((void *)c->load_address, &c->program[0], c->size); - - return (efi_wrapper_entry_t)c->entry_point; + return (efi_wrapper_entry_t)prog_entry(&refcode); }
static void cache_refcode(const struct rmod_stage_load *rsl) { - struct ramstage_cache *c; - long cache_size; - - c = ramstage_cache_location(&cache_size); - - if (!ramstage_cache_is_valid(c)) { - printk(BIOS_DEBUG, "No place to cache reference code.\n"); - return; - } - - /* Determine how much remaining cache available. */ - cache_size -= c->size + sizeof(*c); - - if (cache_size < (sizeof(*c) + prog_size(rsl->prog))) { - printk(BIOS_DEBUG, "Not enough cache space for ref code.\n"); - return; - } - - c = next_cache(c); - c->magic = RAMSTAGE_CACHE_MAGIC; - c->entry_point = (uint32_t)(uintptr_t)prog_entry(rsl->prog); - c->load_address = (uint32_t)(uintptr_t)prog_start(rsl->prog); - c->size = prog_size(rsl->prog); - - printk(BIOS_DEBUG, "Caching refcode at 0x%p(%x)\n", - &c->program[0], c->size); - memcpy(&c->program[0], (void *)c->load_address, c->size); + stage_cache_add(STAGE_REFCODE, rsl->prog); }
#if IS_ENABLED(CONFIG_CHROMEOS) diff --git a/src/soc/intel/baytrail/romstage/raminit.c b/src/soc/intel/baytrail/romstage/raminit.c index a51853a..7488215 100644 --- a/src/soc/intel/baytrail/romstage/raminit.c +++ b/src/soc/intel/baytrail/romstage/raminit.c @@ -25,6 +25,7 @@ #include <console/console.h> #include <device/pci_def.h> #include <halt.h> +#include <stage_cache.h> #include <baytrail/gpio.h> #include <soc/intel/common/mrc_cache.h> #include <baytrail/iomap.h> @@ -169,12 +170,16 @@ void raminit(struct mrc_params *mp, int prev_sleep_state)
if (prev_sleep_state != 3) { cbmem_initialize_empty(); - } else if (cbmem_initialize()) { - #if CONFIG_HAVE_ACPI_RESUME - printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n"); - /* Failed S3 resume, reset to come up cleanly */ - reset_system(); - #endif + stage_cache_create_empty(); + } else { + stage_cache_recover(); + if (cbmem_initialize()) { + #if CONFIG_HAVE_ACPI_RESUME + printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n"); + /* Failed S3 resume, reset to come up cleanly */ + reset_system(); + #endif + } }
printk(BIOS_DEBUG, "MRC Wrapper returned %d\n", ret); diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c index 91548e3..e961ccd 100644 --- a/src/soc/intel/baytrail/romstage/romstage.c +++ b/src/soc/intel/baytrail/romstage/romstage.c @@ -20,18 +20,18 @@ #include <stddef.h> #include <arch/cpu.h> #include <arch/io.h> -#include <arch/cbfs.h> #include <arch/stages.h> #include <arch/early_variables.h> #include <console/console.h> +#include <cbfs.h> #include <cbmem.h> #include <cpu/x86/mtrr.h> #if CONFIG_EC_GOOGLE_CHROMEEC #include <ec/google/chromeec/ec.h> #endif #include <elog.h> -#include <ramstage_cache.h> #include <romstage_handoff.h> +#include <stage_cache.h> #include <timestamp.h> #include <vendorcode/google/chromeos/chromeos.h> #include <baytrail/gpio.h> @@ -359,7 +359,7 @@ static void *setup_stack_and_mttrs(void) return slot; }
-void ramstage_cache_invalid(struct ramstage_cache *cache) +void ramstage_cache_invalid(void) { #if CONFIG_RESET_ON_INVALID_RAMSTAGE_CACHE /* Perform cold reset on invalid ramstage cache. */ diff --git a/src/soc/intel/baytrail/stage_cache.c b/src/soc/intel/baytrail/stage_cache.c index 3bda56d..c133bc8 100644 --- a/src/soc/intel/baytrail/stage_cache.c +++ b/src/soc/intel/baytrail/stage_cache.c @@ -18,10 +18,10 @@ */
#include <cbmem.h> -#include <ramstage_cache.h> +#include <stage_cache.h> #include <baytrail/smm.h>
-struct ramstage_cache *ramstage_cache_location(long *size) +void stage_cache_external_region(void **base, size_t *size) { char *smm_base; /* 1MiB cache size */ @@ -31,5 +31,5 @@ struct ramstage_cache *ramstage_cache_location(long *size) * cbmem_top(). */ smm_base = cbmem_top(); *size = cache_size; - return (void *)&smm_base[smm_region_size() - cache_size]; + *base = &smm_base[smm_region_size() - cache_size]; } diff --git a/src/soc/intel/broadwell/refcode.c b/src/soc/intel/broadwell/refcode.c index 36ce97d..5910e23 100644 --- a/src/soc/intel/broadwell/refcode.c +++ b/src/soc/intel/broadwell/refcode.c @@ -25,7 +25,7 @@ #include <cpu/x86/tsc.h> #include <program_loading.h> #include <rmodule.h> -#include <ramstage_cache.h> +#include <stage_cache.h> #include <string.h> #if IS_ENABLED(CONFIG_CHROMEOS) #include <vendorcode/google/chromeos/vboot_handoff.h> @@ -34,67 +34,20 @@ #include <broadwell/pei_wrapper.h> #include <broadwell/ramstage.h>
-static inline struct ramstage_cache *next_cache(struct ramstage_cache *c) -{ - return (struct ramstage_cache *)&c->program[c->size]; -} - static pei_wrapper_entry_t load_refcode_from_cache(void) { - struct ramstage_cache *c; - long cache_size; + struct prog refcode;
printk(BIOS_DEBUG, "refcode loading from cache.\n");
- c = ramstage_cache_location(&cache_size); - - if (!ramstage_cache_is_valid(c)) { - printk(BIOS_DEBUG, "Invalid ramstage cache descriptor.\n"); - return NULL; - } + stage_cache_load_stage(STAGE_REFCODE, &refcode);
- c = next_cache(c); - if (!ramstage_cache_is_valid(c)) { - printk(BIOS_DEBUG, "Invalid refcode cache descriptor.\n"); - return NULL; - } - - printk(BIOS_DEBUG, "Loading cached reference code from 0x%08x(%x)\n", - c->load_address, c->size); - memcpy((void *)c->load_address, &c->program[0], c->size); - - return (pei_wrapper_entry_t)c->entry_point; + return (pei_wrapper_entry_t)prog_entry(&refcode); }
static void cache_refcode(const struct rmod_stage_load *rsl) { - struct ramstage_cache *c; - long cache_size; - - c = ramstage_cache_location(&cache_size); - - if (!ramstage_cache_is_valid(c)) { - printk(BIOS_DEBUG, "No place to cache reference code.\n"); - return; - } - - /* Determine how much remaining cache available. */ - cache_size -= c->size + sizeof(*c); - - if (cache_size < (sizeof(*c) + prog_size(rsl->prog))) { - printk(BIOS_DEBUG, "Not enough cache space for ref code.\n"); - return; - } - - c = next_cache(c); - c->magic = RAMSTAGE_CACHE_MAGIC; - c->entry_point = (uint32_t)(uintptr_t)prog_entry(rsl->prog); - c->load_address = (uint32_t)(uintptr_t)prog_start(rsl->prog); - c->size = prog_size(rsl->prog); - - printk(BIOS_DEBUG, "Caching refcode at 0x%p(%x)\n", - &c->program[0], c->size); - memcpy(&c->program[0], (void *)c->load_address, c->size); + stage_cache_add(STAGE_REFCODE, rsl->prog); }
#if IS_ENABLED(CONFIG_CHROMEOS) diff --git a/src/soc/intel/broadwell/romstage/raminit.c b/src/soc/intel/broadwell/romstage/raminit.c index b8b88bc..cb541ab 100644 --- a/src/soc/intel/broadwell/romstage/raminit.c +++ b/src/soc/intel/broadwell/romstage/raminit.c @@ -29,6 +29,7 @@ #include <ec/google/chromeec/ec.h> #include <ec/google/chromeec/ec_commands.h> #endif +#include <stage_cache.h> #include <vendorcode/google/chromeos/chromeos.h> #include <soc/intel/common/mrc_cache.h> #include <broadwell/iomap.h> @@ -111,12 +112,16 @@ void raminit(struct pei_data *pei_data)
if (pei_data->boot_mode != SLEEP_STATE_S3) { cbmem_initialize_empty(); - } else if (cbmem_initialize()) { + stage_cache_create_empty(); + } else { + stage_cache_recover(); + if (cbmem_initialize()) { #if CONFIG_HAVE_ACPI_RESUME - printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n"); - /* Failed S3 resume, reset to come up cleanly */ - reset_system(); + printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n"); + /* Failed S3 resume, reset to come up cleanly */ + reset_system(); #endif + } }
printk(BIOS_DEBUG, "MRC data at %p %d bytes\n", pei_data->data_to_save, diff --git a/src/soc/intel/broadwell/romstage/romstage.c b/src/soc/intel/broadwell/romstage/romstage.c index ff5918a..2945204 100644 --- a/src/soc/intel/broadwell/romstage/romstage.c +++ b/src/soc/intel/broadwell/romstage/romstage.c @@ -25,11 +25,12 @@ #include <arch/stages.h> #include <arch/early_variables.h> #include <console/console.h> +#include <cbfs.h> #include <cbmem.h> #include <cpu/x86/mtrr.h> #include <elog.h> -#include <ramstage_cache.h> #include <romstage_handoff.h> +#include <stage_cache.h> #include <timestamp.h> #include <broadwell/me.h> #include <broadwell/pei_data.h> @@ -134,7 +135,7 @@ void asmlinkage romstage_after_car(void) while (1); }
-void ramstage_cache_invalid(struct ramstage_cache *cache) +void ramstage_cache_invalid(void) { #if CONFIG_RESET_ON_INVALID_RAMSTAGE_CACHE /* Perform cold reset on invalid ramstage cache. */ diff --git a/src/soc/intel/broadwell/stage_cache.c b/src/soc/intel/broadwell/stage_cache.c index 6c6b6fb..80c7cc5 100644 --- a/src/soc/intel/broadwell/stage_cache.c +++ b/src/soc/intel/broadwell/stage_cache.c @@ -18,11 +18,11 @@ */
#include <cbmem.h> -#include <ramstage_cache.h> +#include <stage_cache.h> #include <broadwell/smm.h> #include <stdint.h>
-struct ramstage_cache *ramstage_cache_location(long *size) +void stage_cache_external_region(void **base, size_t *size) { /* The ramstage cache lives in the TSEG region. * The top of ram is defined to be the TSEG base address. */ @@ -30,6 +30,6 @@ struct ramstage_cache *ramstage_cache_location(long *size) offset -= CONFIG_IED_REGION_SIZE; offset -= CONFIG_SMM_RESERVED_SIZE;
+ *base = (void *)(cbmem_top() + offset); *size = CONFIG_SMM_RESERVED_SIZE; - return (void *)(cbmem_top() + offset); }
-
Aaron Durbin