-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
/*
* Copyright 2018 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
+#define LOG_CATEGORY LOGC_BLOBLIST
+
#include <common.h>
#include <bloblist.h>
+#include <display_options.h>
#include <log.h>
+#include <malloc.h>
#include <mapmem.h>
#include <spl.h>
+#include <asm/global_data.h>
+#include <u-boot/crc.h>
+
+/*
+ * A bloblist is a single contiguous chunk of memory with a header
+ * (struct bloblist_hdr) and a number of blobs in it.
+ *
+ * Each blob starts on a BLOBLIST_ALIGN boundary relative to the start of the
+ * bloblist and consists of a struct bloblist_rec, some padding to the required
+ * alignment for the blog and then the actual data. The padding ensures that the
+ * start address of the data in each blob is aligned as required. Note that
+ * each blob's *data* is aligned to BLOBLIST_ALIGN regardless of the alignment
+ * of the bloblist itself or the blob header.
+ *
+ * So far, only BLOBLIST_ALIGN alignment is supported.
+ */
DECLARE_GLOBAL_DATA_PTR;
-struct bloblist_rec *bloblist_first_blob(struct bloblist_hdr *hdr)
+static struct tag_name {
+ enum bloblist_tag_t tag;
+ const char *name;
+} tag_name[] = {
+ { BLOBLISTT_NONE, "(none)" },
+
+ /* BLOBLISTT_AREA_FIRMWARE_TOP */
+
+ /* BLOBLISTT_AREA_FIRMWARE */
+ { BLOBLISTT_ACPI_GNVS, "ACPI GNVS" },
+ { BLOBLISTT_INTEL_VBT, "Intel Video-BIOS table" },
+ { BLOBLISTT_TPM2_TCG_LOG, "TPM v2 log space" },
+ { BLOBLISTT_TCPA_LOG, "TPM log space" },
+ { BLOBLISTT_ACPI_TABLES, "ACPI tables for x86" },
+ { BLOBLISTT_SMBIOS_TABLES, "SMBIOS tables for x86" },
+ { BLOBLISTT_VBOOT_CTX, "Chrome OS vboot context" },
+
+ /* BLOBLISTT_PROJECT_AREA */
+ { BLOBLISTT_U_BOOT_SPL_HANDOFF, "SPL hand-off" },
+
+ /* BLOBLISTT_VENDOR_AREA */
+};
+
+const char *bloblist_tag_name(enum bloblist_tag_t tag)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tag_name); i++) {
+ if (tag_name[i].tag == tag)
+ return tag_name[i].name;
+ }
+
+ return "invalid";
+}
+
+static struct bloblist_rec *bloblist_first_blob(struct bloblist_hdr *hdr)
{
if (hdr->alloced <= hdr->hdr_size)
return NULL;
return (struct bloblist_rec *)((void *)hdr + hdr->hdr_size);
}
-struct bloblist_rec *bloblist_next_blob(struct bloblist_hdr *hdr,
- struct bloblist_rec *rec)
+static ulong bloblist_blob_end_ofs(struct bloblist_hdr *hdr,
+ struct bloblist_rec *rec)
{
ulong offset;
offset = (void *)rec - (void *)hdr;
offset += rec->hdr_size + ALIGN(rec->size, BLOBLIST_ALIGN);
+
+ return offset;
+}
+
+static struct bloblist_rec *bloblist_next_blob(struct bloblist_hdr *hdr,
+ struct bloblist_rec *rec)
+{
+ ulong offset = bloblist_blob_end_ofs(hdr, rec);
+
if (offset >= hdr->alloced)
return NULL;
return (struct bloblist_rec *)((void *)hdr + offset);
return NULL;
}
-static int bloblist_addrec(uint tag, int size, struct bloblist_rec **recp)
+static int bloblist_addrec(uint tag, int size, int align,
+ struct bloblist_rec **recp)
{
struct bloblist_hdr *hdr = gd->bloblist;
struct bloblist_rec *rec;
- int new_alloced;
-
- new_alloced = hdr->alloced + sizeof(*rec) +
- ALIGN(size, BLOBLIST_ALIGN);
- if (new_alloced >= hdr->size) {
- log(LOGC_BLOBLIST, LOGL_ERR,
- "Failed to allocate %x bytes size=%x, need size>=%x\n",
- size, hdr->size, new_alloced);
+ int data_start, new_alloced;
+
+ if (!align)
+ align = BLOBLIST_ALIGN;
+
+ /* Figure out where the new data will start */
+ data_start = map_to_sysmem(hdr) + hdr->alloced + sizeof(*rec);
+
+ /* Align the address and then calculate the offset from ->alloced */
+ data_start = ALIGN(data_start, align) - map_to_sysmem(hdr);
+
+ /* Calculate the new allocated total */
+ new_alloced = data_start + ALIGN(size, align);
+
+ if (new_alloced > hdr->size) {
+ log_err("Failed to allocate %x bytes size=%x, need size=%x\n",
+ size, hdr->size, new_alloced);
return log_msg_ret("bloblist add", -ENOSPC);
}
rec = (void *)hdr + hdr->alloced;
- hdr->alloced = new_alloced;
rec->tag = tag;
- rec->hdr_size = sizeof(*rec);
+ rec->hdr_size = data_start - hdr->alloced;
rec->size = size;
rec->spare = 0;
+
+ /* Zero the record data */
+ memset((void *)rec + rec->hdr_size, '\0', rec->size);
+
+ hdr->alloced = new_alloced;
*recp = rec;
return 0;
}
-static int bloblist_ensurerec(uint tag, struct bloblist_rec **recp, int size)
+static int bloblist_ensurerec(uint tag, struct bloblist_rec **recp, int size,
+ int align)
{
struct bloblist_rec *rec;
rec = bloblist_findrec(tag);
if (rec) {
- if (size && size != rec->size)
+ if (size && size != rec->size) {
+ *recp = rec;
return -ESPIPE;
+ }
} else {
int ret;
- ret = bloblist_addrec(tag, size, &rec);
+ ret = bloblist_addrec(tag, size, align, &rec);
if (ret)
return ret;
}
return (void *)rec + rec->hdr_size;
}
-void *bloblist_add(uint tag, int size)
+void *bloblist_add(uint tag, int size, int align)
{
struct bloblist_rec *rec;
- if (bloblist_addrec(tag, size, &rec))
+ if (bloblist_addrec(tag, size, align, &rec))
return NULL;
- return rec + 1;
+ return (void *)rec + rec->hdr_size;
}
-int bloblist_ensure_size(uint tag, int size, void **blobp)
+int bloblist_ensure_size(uint tag, int size, int align, void **blobp)
{
struct bloblist_rec *rec;
int ret;
- ret = bloblist_ensurerec(tag, &rec, size);
+ ret = bloblist_ensurerec(tag, &rec, size, align);
if (ret)
return ret;
*blobp = (void *)rec + rec->hdr_size;
{
struct bloblist_rec *rec;
- if (bloblist_ensurerec(tag, &rec, size))
+ if (bloblist_ensurerec(tag, &rec, size, 0))
return NULL;
return (void *)rec + rec->hdr_size;
}
+int bloblist_ensure_size_ret(uint tag, int *sizep, void **blobp)
+{
+ struct bloblist_rec *rec;
+ int ret;
+
+ ret = bloblist_ensurerec(tag, &rec, *sizep, 0);
+ if (ret == -ESPIPE)
+ *sizep = rec->size;
+ else if (ret)
+ return ret;
+ *blobp = (void *)rec + rec->hdr_size;
+
+ return 0;
+}
+
+static int bloblist_resize_rec(struct bloblist_hdr *hdr,
+ struct bloblist_rec *rec,
+ int new_size)
+{
+ int expand_by; /* Number of bytes to expand by (-ve to contract) */
+ int new_alloced; /* New value for @hdr->alloced */
+ ulong next_ofs; /* Offset of the record after @rec */
+
+ expand_by = ALIGN(new_size - rec->size, BLOBLIST_ALIGN);
+ new_alloced = ALIGN(hdr->alloced + expand_by, BLOBLIST_ALIGN);
+ if (new_size < 0) {
+ log_debug("Attempt to shrink blob size below 0 (%x)\n",
+ new_size);
+ return log_msg_ret("size", -EINVAL);
+ }
+ if (new_alloced > hdr->size) {
+ log_err("Failed to allocate %x bytes size=%x, need size=%x\n",
+ new_size, hdr->size, new_alloced);
+ return log_msg_ret("alloc", -ENOSPC);
+ }
+
+ /* Move the following blobs up or down, if this is not the last */
+ next_ofs = bloblist_blob_end_ofs(hdr, rec);
+ if (next_ofs != hdr->alloced) {
+ memmove((void *)hdr + next_ofs + expand_by,
+ (void *)hdr + next_ofs, new_alloced - next_ofs);
+ }
+ hdr->alloced = new_alloced;
+
+ /* Zero the new part of the blob */
+ if (expand_by > 0) {
+ memset((void *)rec + rec->hdr_size + rec->size, '\0',
+ new_size - rec->size);
+ }
+
+ /* Update the size of this blob */
+ rec->size = new_size;
+
+ return 0;
+}
+
+int bloblist_resize(uint tag, int new_size)
+{
+ struct bloblist_hdr *hdr = gd->bloblist;
+ struct bloblist_rec *rec;
+ int ret;
+
+ rec = bloblist_findrec(tag);
+ if (!rec)
+ return log_msg_ret("find", -ENOENT);
+ ret = bloblist_resize_rec(hdr, rec, new_size);
+ if (ret)
+ return log_msg_ret("resize", ret);
+
+ return 0;
+}
+
static u32 bloblist_calc_chksum(struct bloblist_hdr *hdr)
{
struct bloblist_rec *rec;
return log_msg_ret("Bad size", -EFBIG);
chksum = bloblist_calc_chksum(hdr);
if (hdr->chksum != chksum) {
- log(LOGC_BLOBLIST, LOGL_ERR, "Checksum %x != %x\n", hdr->chksum,
- chksum);
+ log_err("Checksum %x != %x\n", hdr->chksum, chksum);
return log_msg_ret("Bad checksum", -EIO);
}
gd->bloblist = hdr;
struct bloblist_hdr *hdr = gd->bloblist;
hdr->chksum = bloblist_calc_chksum(hdr);
+ log_debug("Finished bloblist size %lx at %lx\n", (ulong)hdr->size,
+ (ulong)map_to_sysmem(hdr));
return 0;
}
+ulong bloblist_get_base(void)
+{
+ return map_to_sysmem(gd->bloblist);
+}
+
+ulong bloblist_get_size(void)
+{
+ struct bloblist_hdr *hdr = gd->bloblist;
+
+ return hdr->size;
+}
+
+void bloblist_get_stats(ulong *basep, ulong *sizep, ulong *allocedp)
+{
+ struct bloblist_hdr *hdr = gd->bloblist;
+
+ *basep = map_to_sysmem(gd->bloblist);
+ *sizep = hdr->size;
+ *allocedp = hdr->alloced;
+}
+
+static void show_value(const char *prompt, ulong value)
+{
+ printf("%s:%*s %-5lx ", prompt, 8 - (int)strlen(prompt), "", value);
+ print_size(value, "\n");
+}
+
+void bloblist_show_stats(void)
+{
+ ulong base, size, alloced;
+
+ bloblist_get_stats(&base, &size, &alloced);
+ printf("base: %lx\n", base);
+ show_value("size", size);
+ show_value("alloced", alloced);
+ show_value("free", size - alloced);
+}
+
+void bloblist_show_list(void)
+{
+ struct bloblist_hdr *hdr = gd->bloblist;
+ struct bloblist_rec *rec;
+
+ printf("%-8s %8s Tag Name\n", "Address", "Size");
+ for (rec = bloblist_first_blob(hdr); rec;
+ rec = bloblist_next_blob(hdr, rec)) {
+ printf("%08lx %8x %4x %s\n",
+ (ulong)map_to_sysmem((void *)rec + rec->hdr_size),
+ rec->size, rec->tag, bloblist_tag_name(rec->tag));
+ }
+}
+
+void bloblist_reloc(void *to, uint to_size, void *from, uint from_size)
+{
+ struct bloblist_hdr *hdr;
+
+ memcpy(to, from, from_size);
+ hdr = to;
+ hdr->size = to_size;
+}
+
int bloblist_init(void)
{
- bool expected;
+ bool fixed = IS_ENABLED(CONFIG_BLOBLIST_FIXED);
int ret = -ENOENT;
+ ulong addr, size;
+ bool expected;
/**
- * Wed expect to find an existing bloblist in the first phase of U-Boot
- * that runs
+ * We don't expect to find an existing bloblist in the first phase of
+ * U-Boot that runs. Also we have no way to receive the address of an
+ * allocated bloblist from a previous stage, so it must be at a fixed
+ * address.
*/
- expected = !u_boot_first_phase();
- if (expected)
- ret = bloblist_check(CONFIG_BLOBLIST_ADDR,
- CONFIG_BLOBLIST_SIZE);
+ expected = fixed && !u_boot_first_phase();
+ if (spl_prev_phase() == PHASE_TPL && !IS_ENABLED(CONFIG_TPL_BLOBLIST))
+ expected = false;
+ if (fixed)
+ addr = IF_ENABLED_INT(CONFIG_BLOBLIST_FIXED,
+ CONFIG_BLOBLIST_ADDR);
+ size = CONFIG_BLOBLIST_SIZE;
+ if (expected) {
+ ret = bloblist_check(addr, size);
+ if (ret) {
+ log_warning("Expected bloblist at %lx not found (err=%d)\n",
+ addr, ret);
+ } else {
+ /* Get the real size, if it is not what we expected */
+ size = gd->bloblist->size;
+ }
+ }
if (ret) {
- log(LOGC_BLOBLIST, expected ? LOGL_WARNING : LOGL_DEBUG,
- "Existing bloblist not found: creating new bloblist\n");
- ret = bloblist_new(CONFIG_BLOBLIST_ADDR, CONFIG_BLOBLIST_SIZE,
- 0);
+ if (CONFIG_IS_ENABLED(BLOBLIST_ALLOC)) {
+ void *ptr = memalign(BLOBLIST_ALIGN, size);
+
+ if (!ptr)
+ return log_msg_ret("alloc", -ENOMEM);
+ addr = map_to_sysmem(ptr);
+ } else if (!fixed) {
+ return log_msg_ret("!fixed", ret);
+ }
+ log_debug("Creating new bloblist size %lx at %lx\n", size,
+ addr);
+ ret = bloblist_new(addr, size, 0);
} else {
- log(LOGC_BLOBLIST, LOGL_DEBUG, "Found existing bloblist\n");
+ log_debug("Found existing bloblist size %lx at %lx\n", size,
+ addr);
}
return ret;
projects / platform / kernel / u-boot.git / blobdiff