From f545abfd22a594ecb9c0678efa5278bb38a37a70 Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Thu, 24 Oct 2013 10:14:06 -0500 Subject: rmodule: consolidate rmodule stage loading There are 3 places rmodule stages are loaded in the existing code: cbfs and 2 in vboot_wrapper. Much of the code is the same except for a few different cbmem entry ids. Instead provide a common implementation in the rmodule library itself. A structure named rmod_stage_load is introduced to manage the inputs and outputs from the new API. BUG=chrome-os-partner:22866 BRANCH=None TEST=Built and booted successfully. Change-Id: I146055005557e04164e95de4aae8a2bde8713131 Signed-off-by: Aaron Durbin Reviewed-on: https://chromium-review.googlesource.com/174425 Reviewed-by: Duncan Laurie Reviewed-on: http://review.coreboot.org/4897 Reviewed-by: Alexandru Gagniuc Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/vendorcode/google/chromeos/vboot_loader.c | 95 +++++---------------------- 1 file changed, 18 insertions(+), 77 deletions(-) (limited to 'src/vendorcode/google') diff --git a/src/vendorcode/google/chromeos/vboot_loader.c b/src/vendorcode/google/chromeos/vboot_loader.c index 91f6237810..6eff99cec9 100644 --- a/src/vendorcode/google/chromeos/vboot_loader.c +++ b/src/vendorcode/google/chromeos/vboot_loader.c @@ -37,59 +37,26 @@ static void vboot_run_stub(struct vboot_context *context) { - const struct cbmem_entry *vboot_entry; - struct rmodule vbootstub; - struct cbfs_stage *stage; - size_t region_size; - int rmodule_offset; - int load_offset; - char *vboot_region; + struct rmod_stage_load rmod_stage = { + .cbmem_id = 0xffffffff, + .name = CONFIG_CBFS_PREFIX "/vboot", + }; void (*entry)(struct vboot_context *context); - stage = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, - CONFIG_CBFS_PREFIX "/vboot", - CBFS_TYPE_STAGE, NULL); - - if (stage == NULL) - return; - - rmodule_offset = - rmodule_calc_region(DYN_CBMEM_ALIGN_SIZE, - stage->memlen, ®ion_size, &load_offset); - - vboot_entry = cbmem_entry_add(0xffffffff, region_size); - - if (vboot_entry == NULL) { - printk(BIOS_DEBUG, "Couldn't get region for vboot stub.\n"); - return; - } - - vboot_region = cbmem_entry_start(vboot_entry); - - if (!cbfs_decompress(stage->compression, &stage[1], - &vboot_region[rmodule_offset], stage->len)) { - printk(BIOS_DEBUG, "Couldn't decompress vboot stub.\n"); + if (rmodule_stage_load_from_cbfs(&rmod_stage)) { + printk(BIOS_DEBUG, "Could not load vboot stub.\n"); goto out; } - if (rmodule_parse(&vboot_region[rmodule_offset], &vbootstub)) { - printk(BIOS_DEBUG, "Couldn't parse vboot stub rmodule.\n"); - goto out; - } - - if (rmodule_load(&vboot_region[load_offset], &vbootstub)) { - printk(BIOS_DEBUG, "Couldn't load vboot stub.\n"); - goto out; - } - - entry = rmodule_entry(&vbootstub); + entry = rmod_stage.entry; /* Call stub. */ entry(context); out: /* Tear down the region no longer needed. */ - cbmem_entry_remove(vboot_entry); + if (rmod_stage.cbmem_entry != NULL) + cbmem_entry_remove(rmod_stage.cbmem_entry); } /* Helper routines for the vboot stub. */ @@ -175,14 +142,11 @@ static void vboot_load_ramstage(struct vboot_handoff *vboot_handoff, struct romstage_handoff *handoff) { struct cbfs_stage *stage; - struct rmodule ramstage; - void *entry_point; - size_t region_size; - char *ramstage_region; - int rmodule_offset; - int load_offset; - const struct cbmem_entry *ramstage_entry; const struct firmware_component *fwc; + struct rmod_stage_load rmod_load = { + .cbmem_id = CBMEM_ID_RAMSTAGE, + .name = CONFIG_CBFS_PREFIX "/coreboot_ram", + }; if (CONFIG_VBOOT_RAMSTAGE_INDEX >= MAX_PARSED_FW_COMPONENTS) { printk(BIOS_ERR, "Invalid ramstage index: %d\n", @@ -202,45 +166,22 @@ static void vboot_load_ramstage(struct vboot_handoff *vboot_handoff, stage = (void *)fwc->address; - rmodule_offset = - rmodule_calc_region(DYN_CBMEM_ALIGN_SIZE, - stage->memlen, ®ion_size, &load_offset); - - ramstage_entry = cbmem_entry_add(CBMEM_ID_RAMSTAGE, region_size); + timestamp_add_now(TS_START_COPYRAM); - if (ramstage_entry == NULL) { + if (rmodule_stage_load(&rmod_load, stage)) { vboot_handoff->selected_firmware = VB_SELECT_FIRMWARE_READONLY; - printk(BIOS_DEBUG, "Could not add ramstage region.\n"); + printk(BIOS_DEBUG, "Could not load ramstage region.\n"); return; } - timestamp_add_now(TS_START_COPYRAM); - - ramstage_region = cbmem_entry_start(ramstage_entry); - - printk(BIOS_DEBUG, "Decompressing ramstage @ 0x%p (%d bytes)\n", - &ramstage_region[rmodule_offset], stage->memlen); - - if (!cbfs_decompress(stage->compression, &stage[1], - &ramstage_region[rmodule_offset], stage->len)) - return; - - if (rmodule_parse(&ramstage_region[rmodule_offset], &ramstage)) - return; - - if (rmodule_load(&ramstage_region[load_offset], &ramstage)) - return; - - entry_point = rmodule_entry(&ramstage); - - cache_loaded_ramstage(handoff, ramstage_entry, entry_point); + cache_loaded_ramstage(handoff, rmod_load.cbmem_entry, rmod_load.entry); timestamp_add_now(TS_END_COPYRAM); __asm__ volatile ( "movl $0, %%ebp\n" "jmp *%%edi\n" - :: "D"(entry_point) + :: "D"(rmod_load.entry) ); } -- cgit v1.2.3