164 lines
3.8 KiB
C
164 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <cbmem.h>
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#include <console/console.h>
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#include <imd.h>
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#include <stage_cache.h>
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#include <string.h>
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static struct imd imd_stage_cache;
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static void stage_cache_create_empty(void)
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{
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struct imd *imd;
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void *base;
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size_t size;
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imd = &imd_stage_cache;
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stage_cache_external_region(&base, &size);
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imd_handle_init(imd, (void *)(size + (uintptr_t)base));
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printk(BIOS_DEBUG, "External stage cache:\n");
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imd_create_tiered_empty(imd, 4096, 4096, 1024, 32);
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if (imd_limit_size(imd, size))
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printk(BIOS_DEBUG, "Could not limit stage cache size.\n");
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}
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static void stage_cache_recover(void)
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{
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struct imd *imd;
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void *base;
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size_t size;
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imd = &imd_stage_cache;
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stage_cache_external_region(&base, &size);
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imd_handle_init(imd, (void *)(size + (uintptr_t)base));
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if (imd_recover(imd))
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printk(BIOS_DEBUG, "Unable to recover external stage cache.\n");
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}
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void stage_cache_add(int stage_id, const struct prog *stage)
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{
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struct imd *imd;
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const struct imd_entry *e;
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struct stage_cache *meta;
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void *c;
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imd = &imd_stage_cache;
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e = imd_entry_add(imd, CBMEM_ID_STAGEx_META + stage_id, sizeof(*meta));
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if (e == NULL) {
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printk(BIOS_DEBUG, "Error: Can't add %x metadata to imd\n",
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CBMEM_ID_STAGEx_META + stage_id);
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return;
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}
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meta = imd_entry_at(imd, e);
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meta->load_addr = (uintptr_t)prog_start(stage);
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meta->entry_addr = (uintptr_t)prog_entry(stage);
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meta->arg = (uintptr_t)prog_entry_arg(stage);
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e = imd_entry_add(imd, CBMEM_ID_STAGEx_CACHE + stage_id,
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prog_size(stage));
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if (e == NULL) {
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printk(BIOS_DEBUG, "Error: Can't add stage_cache %x to imd\n",
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CBMEM_ID_STAGEx_CACHE + stage_id);
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return;
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}
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c = imd_entry_at(imd, e);
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memcpy(c, prog_start(stage), prog_size(stage));
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}
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void stage_cache_add_raw(int stage_id, const void *base, const size_t size)
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{
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struct imd *imd;
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const struct imd_entry *e;
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void *c;
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imd = &imd_stage_cache;
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e = imd_entry_add(imd, CBMEM_ID_STAGEx_RAW + stage_id, size);
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if (e == NULL) {
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printk(BIOS_DEBUG, "Error: Can't add %x raw data to imd\n",
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CBMEM_ID_STAGEx_RAW + stage_id);
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return;
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}
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c = imd_entry_at(imd, e);
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if (c == NULL) {
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printk(BIOS_DEBUG, "Error: Can't get %x raw entry in imd\n",
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CBMEM_ID_STAGEx_RAW + stage_id);
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return;
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}
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memcpy(c, base, size);
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}
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void stage_cache_get_raw(int stage_id, void **base, size_t *size)
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{
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struct imd *imd;
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const struct imd_entry *e;
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imd = &imd_stage_cache;
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e = imd_entry_find(imd, CBMEM_ID_STAGEx_RAW + stage_id);
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if (e == NULL) {
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printk(BIOS_DEBUG, "Error: Can't find %x raw data to imd\n",
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CBMEM_ID_STAGEx_RAW + stage_id);
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return;
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}
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*base = imd_entry_at(imd, e);
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*size = imd_entry_size(e);
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}
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void stage_cache_load_stage(int stage_id, struct prog *stage)
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{
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struct imd *imd;
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struct stage_cache *meta;
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const struct imd_entry *e;
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void *c;
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size_t size;
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imd = &imd_stage_cache;
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e = imd_entry_find(imd, CBMEM_ID_STAGEx_META + stage_id);
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if (e == NULL) {
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printk(BIOS_DEBUG, "Error: Can't find %x metadata in imd\n",
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CBMEM_ID_STAGEx_META + stage_id);
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return;
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}
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meta = imd_entry_at(imd, e);
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e = imd_entry_find(imd, CBMEM_ID_STAGEx_CACHE + stage_id);
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if (e == NULL) {
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printk(BIOS_DEBUG, "Error: Can't find stage_cache %x in imd\n",
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CBMEM_ID_STAGEx_CACHE + stage_id);
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return;
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}
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c = imd_entry_at(imd, e);
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size = imd_entry_size(e);
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memcpy((void *)(uintptr_t)meta->load_addr, c, size);
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prog_set_area(stage, (void *)(uintptr_t)meta->load_addr, size);
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prog_set_entry(stage, (void *)(uintptr_t)meta->entry_addr,
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(void *)(uintptr_t)meta->arg);
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}
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static void stage_cache_setup(int is_recovery)
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{
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if (is_recovery)
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stage_cache_recover();
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else
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stage_cache_create_empty();
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}
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ROMSTAGE_CBMEM_INIT_HOOK(stage_cache_setup)
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RAMSTAGE_CBMEM_INIT_HOOK(stage_cache_setup)
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POSTCAR_CBMEM_INIT_HOOK(stage_cache_setup)
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