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Code Issues Releases Wiki Activity

Add count_usable_erasers which returns the number of well-defined erasers for a chip

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It solves one FIXME and consequentially allows to remove a later check
right now, and is used in the upcoming SFDP patch.
Adds a forward declaration of check_block_eraser.

Corresponding to flashrom svn r1358.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Stefan Tauner 2011-07-01 00:19:12 +00:00
parent 00155498a8
commit 5368dca436
1 changed files with 22 additions and 12 deletions
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34
flashrom.c
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@ -465,6 +465,8 @@ struct shutdown_func_data {
*/
static int may_register_shutdown = 0;
static int check_block_eraser(const struct flashchip *flash, int k, int log);
/* Register a function to be executed on programmer shutdown.
* The advantage over atexit() is that you can supply a void pointer which will
* be used as parameter to the registered function upon programmer shutdown.
@ -711,6 +713,19 @@ char *extract_programmer_param(const char *param_name)
return extract_param(&programmer_param, param_name, ",");
}
/* Returns the number of well-defined erasers for a chip.
* The log parameter controls output. */
static unsigned int count_usable_erasers(const struct flashchip *flash, int log)
{
unsigned int usable_erasefunctions = 0;
int k;
for (k = 0; k < NUM_ERASEFUNCTIONS; k++) {
if (!check_block_eraser(flash, k, 0))
usable_erasefunctions++;
}
return usable_erasefunctions;
}
/* start is an offset to the base address of the flash chip */
int check_erased_range(struct flashchip *flash, int start, int len)
{
@ -1467,7 +1482,7 @@ static int walk_eraseregions(struct flashchip *flash, int erasefunction,
return 0;
}
static int check_block_eraser(struct flashchip *flash, int k, int log)
static int check_block_eraser(const struct flashchip *flash, int k, int log)
{
struct block_eraser eraser = flash->block_erasers[k];
@ -1496,18 +1511,9 @@ int erase_and_write_flash(struct flashchip *flash, uint8_t *oldcontents, uint8_t
int k, ret = 0;
uint8_t *curcontents;
unsigned long size = flash->total_size * 1024;
int usable_erasefunctions = 0;
unsigned int usable_erasefunctions = count_usable_erasers(flash, 0);
for (k = 0; k < NUM_ERASEFUNCTIONS; k++)
if (!check_block_eraser(flash, k, 0))
usable_erasefunctions++;
msg_cinfo("Erasing and writing flash chip... ");
if (!usable_erasefunctions) {
msg_cerr("ERROR: flashrom has no erase function for this flash "
"chip.\n");
return 1;
}
curcontents = (uint8_t *) malloc(size);
/* Copy oldcontents to curcontents to avoid clobbering oldcontents. */
memcpy(curcontents, oldcontents, size);
@ -1825,7 +1831,11 @@ int chip_safety_check(struct flashchip *flash, int force, int read_it, int write
return 1;
msg_cerr("Continuing anyway.\n");
}
/* FIXME: Check if at least one erase function exists. */
if(count_usable_erasers(flash, 0) == 0) {
msg_cerr("flashrom has no erase function for this "
"flash chip.\n");
return 1;
}
}
if (write_it) {
if (flash->tested & TEST_BAD_WRITE) {