diff options
Diffstat (limited to 'arch/x86/lib')
| -rw-r--r-- | arch/x86/lib/coreboot/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/lib/coreboot/cb_support.c | 41 | ||||
| -rw-r--r-- | arch/x86/lib/zimage.c | 13 |
3 files changed, 53 insertions, 2 deletions
diff --git a/arch/x86/lib/coreboot/Makefile b/arch/x86/lib/coreboot/Makefile index b5250d916b..cb0ae1d017 100644 --- a/arch/x86/lib/coreboot/Makefile +++ b/arch/x86/lib/coreboot/Makefile @@ -4,3 +4,4 @@ # obj-y += cb_sysinfo.o +obj-y += cb_support.o diff --git a/arch/x86/lib/coreboot/cb_support.c b/arch/x86/lib/coreboot/cb_support.c new file mode 100644 index 0000000000..ebb45cdfb5 --- /dev/null +++ b/arch/x86/lib/coreboot/cb_support.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Support for booting from coreboot + * + * Copyright 2021 Google LLC + */ + +#include <common.h> +#include <asm/cb_sysinfo.h> +#include <asm/e820.h> + +unsigned int cb_install_e820_map(unsigned int max_entries, + struct e820_entry *entries) +{ + unsigned int num_entries; + int i; + + num_entries = min((unsigned int)lib_sysinfo.n_memranges, max_entries); + if (num_entries < lib_sysinfo.n_memranges) { + printf("Warning: Limiting e820 map to %d entries\n", + num_entries); + } + for (i = 0; i < num_entries; i++) { + struct memrange *memrange = &lib_sysinfo.memrange[i]; + + entries[i].addr = memrange->base; + entries[i].size = memrange->size; + + /* + * coreboot has some extensions (type 6 & 16) to the E820 types. + * When we detect this, mark it as E820_RESERVED. + */ + if (memrange->type == CB_MEM_VENDOR_RSVD || + memrange->type == CB_MEM_TABLE) + entries[i].type = E820_RESERVED; + else + entries[i].type = memrange->type; + } + + return num_entries; +} diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index 602788e016..90fc8a466d 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -18,6 +18,7 @@ #include <bootm.h> #include <command.h> #include <env.h> +#include <init.h> #include <irq_func.h> #include <log.h> #include <malloc.h> @@ -28,6 +29,7 @@ #include <asm/byteorder.h> #include <asm/bootm.h> #include <asm/bootparam.h> +#include <asm/global_data.h> #ifdef CONFIG_SYS_COREBOOT #include <asm/arch/timestamp.h> #endif @@ -35,6 +37,8 @@ #include <linux/ctype.h> #include <linux/libfdt.h> +DECLARE_GLOBAL_DATA_PTR; + /* * Memory lay-out: * @@ -309,8 +313,13 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, int bootproto = get_boot_protocol(hdr, false); log_debug("Setup E820 entries\n"); - setup_base->e820_entries = install_e820_map( - ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map); + if (ll_boot_init()) { + setup_base->e820_entries = install_e820_map( + ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map); + } else if (IS_ENABLED(CONFIG_COREBOOT_SYSINFO)) { + setup_base->e820_entries = cb_install_e820_map( + ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map); + } if (bootproto == 0x0100) { setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC; |