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bloblist: Allow custom alignment for blobs

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Some blobs need a larger alignment than the default. For example, ACPI
tables often start at a 4KB boundary. Add support for this.

Update the size of the test blob to allow these larger records.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-09-19 18:49:29 -06:00
parent 751b7c7963
commit 4c1497e776
5 changed files with 59 additions and 25 deletions
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32
common/bloblist.c
View file

@ -83,18 +83,25 @@ static struct bloblist_rec *bloblist_findrec(uint tag)
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 data_start, new_alloced;
if (!align)
align = BLOBLIST_ALIGN;
/* Figure out where the new data will start */
data_start = hdr->alloced + sizeof(*rec);
data_start = ALIGN(data_start, BLOBLIST_ALIGN);
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, BLOBLIST_ALIGN);
new_alloced = data_start + ALIGN(size, align);
if (new_alloced >= hdr->size) {
log(LOGC_BLOBLIST, LOGL_ERR,
"Failed to allocate %x bytes size=%x, need size=%x\n",
@ -117,7 +124,8 @@ static int bloblist_addrec(uint tag, int size, struct bloblist_rec **recp)
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;
@ -130,7 +138,7 @@ static int bloblist_ensurerec(uint tag, struct bloblist_rec **recp, int size)
} else {
int ret;
ret = bloblist_addrec(tag, size, &rec);
ret = bloblist_addrec(tag, size, align, &rec);
if (ret)
return ret;
}
@ -152,22 +160,22 @@ void *bloblist_find(uint tag, int size)
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 (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;
@ -179,7 +187,7 @@ void *bloblist_ensure(uint tag, int 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;
@ -190,7 +198,7 @@ int bloblist_ensure_size_ret(uint tag, int *sizep, void **blobp)
struct bloblist_rec *rec;
int ret;
ret = bloblist_ensurerec(tag, &rec, *sizep);
ret = bloblist_ensurerec(tag, &rec, *sizep, 0);
if (ret == -ESPIPE)
*sizep = rec->size;
else if (ret)