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-rw-r--r--util/ifdtool/ifdtool.c165
1 files changed, 111 insertions, 54 deletions
diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c
index e0656c7bda..645175e16b 100644
--- a/util/ifdtool/ifdtool.c
+++ b/util/ifdtool/ifdtool.c
@@ -28,6 +28,17 @@
#define O_BINARY 0
#endif
+/**
+ * PTR_IN_RANGE - examine whether a pointer falls in [base, base + limit)
+ * @param ptr: the non-void* pointer to a single arbitrary-sized object.
+ * @param base: base address represented with char* type.
+ * @param limit: upper limit of the legal address.
+ *
+ */
+#define PTR_IN_RANGE(ptr, base, limit) \
+ ((const char *)(ptr) >= (base) && \
+ (const char *)&(ptr)[1] <= (base) + (limit))
+
static int ifd_version;
static unsigned int max_regions = 0;
static int selected_chip = 0;
@@ -62,7 +73,56 @@ static fdbar_t *find_fd(char *image, int size)
return NULL;
}
- return (fdbar_t *) (image + i);
+ fdbar_t *fdb = (fdbar_t *) (image + i);
+ return PTR_IN_RANGE(fdb, image, size) ? fdb : NULL;
+}
+
+static fcba_t *find_fcba(char *image, int size)
+{
+ fdbar_t *fdb = find_fd(image, size);
+ if (!fdb)
+ return NULL;
+ fcba_t *fcba = (fcba_t *) (image + ((fdb->flmap0 & 0xff) << 4));
+ return PTR_IN_RANGE(fcba, image, size) ? fcba : NULL;
+
+}
+
+static fmba_t *find_fmba(char *image, int size)
+{
+ fdbar_t *fdb = find_fd(image, size);
+ if (!fdb)
+ return NULL;
+ fmba_t *fmba = (fmba_t *) (image + ((fdb->flmap1 & 0xff) << 4));
+ return PTR_IN_RANGE(fmba, image, size) ? fmba : NULL;
+}
+
+static frba_t *find_frba(char *image, int size)
+{
+ fdbar_t *fdb = find_fd(image, size);
+ if (!fdb)
+ return NULL;
+ frba_t *frba =
+ (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));
+ return PTR_IN_RANGE(frba, image, size) ? frba : NULL;
+}
+
+static fpsba_t *find_fpsba(char *image, int size)
+{
+ fdbar_t *fdb = find_fd(image, size);
+ if (!fdb)
+ return NULL;
+ fpsba_t *fpsba =
+ (fpsba_t *) (image + (((fdb->flmap1 >> 16) & 0xff) << 4));
+ return PTR_IN_RANGE(fpsba, image, size) ? fpsba : NULL;
+}
+
+static fmsba_t *find_fmsba(char *image, int size)
+{
+ fdbar_t *fdb = find_fd(image, size);
+ if (!fdb)
+ return NULL;
+ fmsba_t *fmsba = (fmsba_t *) (image + ((fdb->flmap2 & 0xff) << 4));
+ return PTR_IN_RANGE(fmsba, image, size) ? fmsba : NULL;
}
/*
@@ -72,14 +132,9 @@ static fdbar_t *find_fd(char *image, int size)
*/
static void check_ifd_version(char *image, int size)
{
- fdbar_t *fdb = find_fd(image, size);
- fcba_t *fcba;
int read_freq;
- if (!fdb)
- exit(EXIT_FAILURE);
-
- fcba = (fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4));
+ const fcba_t *fcba = find_fcba(image, size);
if (!fcba)
exit(EXIT_FAILURE);
@@ -431,11 +486,10 @@ static void dump_fmba(const fmba_t *fmba)
static void dump_fmsba(const fmsba_t *fmsba)
{
+ unsigned int i;
printf("Found Processor Strap Section\n");
- printf("????: 0x%08x\n", fmsba->data[0]);
- printf("????: 0x%08x\n", fmsba->data[1]);
- printf("????: 0x%08x\n", fmsba->data[2]);
- printf("????: 0x%08x\n", fmsba->data[3]);
+ for (i = 0; i < ARRAY_SIZE(fmsba->data); i++)
+ printf("????: 0x%08x\n", fmsba->data[i]);
}
static void dump_jid(uint32_t jid)
@@ -529,7 +583,7 @@ static void dump_oem(const uint8_t *oem)
static void dump_fd(char *image, int size)
{
- fdbar_t *fdb = find_fd(image, size);
+ const fdbar_t *fdb = find_fd(image, size);
if (!fdb)
exit(EXIT_FAILURE);
@@ -557,38 +611,42 @@ static void dump_fd(char *image, int size)
dump_vtba((vtba_t *)
(image + ((fdb->flumap1 & 0xff) << 4)),
(fdb->flumap1 >> 8) & 0xff);
- dump_oem((uint8_t *)image + 0xf00);
- dump_frba((frba_t *)
- (image + (((fdb->flmap0 >> 16) & 0xff) << 4)));
- dump_fcba((fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4)));
- dump_fpsba((fpsba_t *)
- (image + (((fdb->flmap1 >> 16) & 0xff) << 4)));
- dump_fmba((fmba_t *) (image + (((fdb->flmap1) & 0xff) << 4)));
- dump_fmsba((fmsba_t *) (image + (((fdb->flmap2) & 0xff) << 4)));
+ dump_oem((const uint8_t *)image + 0xf00);
+
+ const frba_t *frba = find_frba(image, size);
+ const fcba_t *fcba = find_fcba(image, size);
+ const fpsba_t *fpsba = find_fpsba(image, size);
+ const fmba_t *fmba = find_fmba(image, size);
+ const fmsba_t *fmsba = find_fmsba(image, size);
+
+ if (frba && fcba && fpsba && fmba && fmsba) {
+ dump_frba(frba);
+ dump_fcba(fcba);
+ dump_fpsba(fpsba);
+ dump_fmba(fmba);
+ dump_fmsba(fmsba);
+ } else {
+ printf("FD is corrupted!\n");
+ }
}
static void dump_layout(char *image, int size, const char *layout_fname)
{
- fdbar_t *fdb = find_fd(image, size);
- if (!fdb)
+ const frba_t *frba = find_frba(image, size);
+ if (!frba)
exit(EXIT_FAILURE);
- dump_frba_layout((frba_t *)
- (image + (((fdb->flmap0 >> 16) & 0xff) << 4)),
- layout_fname);
+ dump_frba_layout(frba, layout_fname);
}
static void write_regions(char *image, int size)
{
unsigned int i;
+ const frba_t *frba = find_frba(image, size);
- fdbar_t *fdb = find_fd(image, size);
- if (!fdb)
+ if (!frba)
exit(EXIT_FAILURE);
- frba_t *frba =
- (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));
-
for (i = 0; i < max_regions; i++) {
region_t region = get_region(frba, i);
dump_region(i, frba);
@@ -635,8 +693,9 @@ static void write_image(const char *filename, char *image, int size)
static void set_spi_frequency(const char *filename, char *image, int size,
enum spi_frequency freq)
{
- fdbar_t *fdb = find_fd(image, size);
- fcba_t *fcba = (fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4));
+ fcba_t *fcba = find_fcba(image, size);
+ if (!fcba)
+ exit(EXIT_FAILURE);
/* clear bits 21-29 */
fcba->flcomp &= ~0x3fe00000;
@@ -652,8 +711,10 @@ static void set_spi_frequency(const char *filename, char *image, int size,
static void set_em100_mode(const char *filename, char *image, int size)
{
- fdbar_t *fdb = find_fd(image, size);
- fcba_t *fcba = (fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4));
+ fcba_t *fcba = find_fcba(image, size);
+ if (!fcba)
+ exit(EXIT_FAILURE);
+
int freq;
switch (ifd_version) {
@@ -675,8 +736,9 @@ static void set_em100_mode(const char *filename, char *image, int size)
static void set_chipdensity(const char *filename, char *image, int size,
unsigned int density)
{
- fdbar_t *fdb = find_fd(image, size);
- fcba_t *fcba = (fcba_t *) (image + (((fdb->flmap0) & 0xff) << 4));
+ fcba_t *fcba = find_fcba(image, size);
+ if (!fcba)
+ exit(EXIT_FAILURE);
printf("Setting chip density to ");
decode_component_density(density);
@@ -728,8 +790,9 @@ static void set_chipdensity(const char *filename, char *image, int size,
static void lock_descriptor(const char *filename, char *image, int size)
{
int wr_shift, rd_shift;
- fdbar_t *fdb = find_fd(image, size);
- fmba_t *fmba = (fmba_t *) (image + (((fdb->flmap1) & 0xff) << 4));
+ fmba_t *fmba = find_fmba(image, size);
+ if (!fmba)
+ exit(EXIT_FAILURE);
/* TODO: Dynamically take Platform Data Region and GbE Region
* into regard.
*/
@@ -784,8 +847,9 @@ static void lock_descriptor(const char *filename, char *image, int size)
static void unlock_descriptor(const char *filename, char *image, int size)
{
- fdbar_t *fdb = find_fd(image, size);
- fmba_t *fmba = (fmba_t *) (image + (((fdb->flmap1) & 0xff) << 4));
+ fmba_t *fmba = find_fmba(image, size);
+ if (!fmba)
+ exit(EXIT_FAILURE);
if (ifd_version >= IFD_VERSION_2) {
/* Access bits for each region are read: 19:8 write: 31:20 */
@@ -805,11 +869,9 @@ static void unlock_descriptor(const char *filename, char *image, int size)
void inject_region(const char *filename, char *image, int size,
unsigned int region_type, const char *region_fname)
{
- fdbar_t *fdb = find_fd(image, size);
- if (!fdb)
+ frba_t *frba = find_frba(image, size);
+ if (!frba)
exit(EXIT_FAILURE);
- frba_t *frba =
- (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));
region_t region = get_region(frba, region_type);
if (region.size <= 0xfff) {
@@ -914,13 +976,10 @@ void new_layout(const char *filename, char *image, int size,
char *new_image;
/* load current descriptor map and regions */
- fdbar_t *fdb = find_fd(image, size);
- if (!fdb)
+ frba_t *frba = find_frba(image, size);
+ if (!frba)
exit(EXIT_FAILURE);
- frba_t *frba =
- (frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));
-
for (i = 0; i < max_regions; i++) {
current_regions[i] = get_region(frba, i);
new_regions[i] = get_region(frba, i);
@@ -1031,14 +1090,12 @@ void new_layout(const char *filename, char *image, int size,
}
/* update new descriptor regions */
- fdb = find_fd(new_image, new_extent);
- if (!fdb)
+ frba = find_frba(new_image, new_extent);
+ if (!frba)
exit(EXIT_FAILURE);
- frba = (frba_t *) (new_image + (((fdb->flmap0 >> 16) & 0xff) << 4));
- for (i = 1; i < max_regions; i++) {
+ for (i = 1; i < max_regions; i++)
set_region(frba, i, &new_regions[i]);
- }
write_image(filename, new_image, new_extent);
free(new_image);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 04:06:49 +0000