- fix power of 2 bug in calculating the block size and add warning if block size is too big - rename i to dw - fix output - remove unnecessary code
Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at --- spi25.c | 52 ++++++++++++++++++++++++++-------------------------- 1 files changed, 26 insertions(+), 26 deletions(-)
diff --git a/spi25.c b/spi25.c index 7f648bf..ae59ce1 100644 --- a/spi25.c +++ b/spi25.c @@ -134,21 +134,13 @@ struct sfdp_tbl_hdr { uint32_t ptp; /* 24b pointer */ };
-struct sfdp_tbl_0 { - uint8_t id; - uint8_t v_minor; - uint8_t v_major; - uint8_t len; - uint32_t ptp; /* 24b pointer */ -}; - static int sfdp_fill_flash(struct flashchip *f, uint8_t *buf, uint16_t len) { uint32_t tmp32; uint8_t tmp8; uint32_t total_size; /* in bytes */ uint32_t bsize; - int i, j; + int dw, j;
msg_cspew("Parsing JEDEC SFDP parameter table...\n"); if (len == 9 * 4) { @@ -157,11 +149,11 @@ static int sfdp_fill_flash(struct flashchip *f, uint8_t *buf, uint16_t len) }
/* 1. double word */ - i = 0; - tmp32 = buf[(4 * i) + 0]; - tmp32 |= ((unsigned int)buf[(4 * i) + 1]) << 8; - tmp32 |= ((unsigned int)buf[(4 * i) + 2]) << 16; - tmp32 |= ((unsigned int)buf[(4 * i) + 3]) << 24; + dw = 0; + tmp32 = buf[(4 * dw) + 0]; + tmp32 |= ((unsigned int)buf[(4 * dw) + 1]) << 8; + tmp32 |= ((unsigned int)buf[(4 * dw) + 2]) << 16; + tmp32 |= ((unsigned int)buf[(4 * dw) + 3]) << 24;
tmp8 = (tmp32 >> 17) & 0x3; switch (tmp8) { @@ -195,28 +187,36 @@ static int sfdp_fill_flash(struct flashchip *f, uint8_t *buf, uint16_t len) msg_cspew("not to be especially enabled.\n");
/* 2. double word */ - i = 1; - tmp32 = buf[(4 * i) + 0]; - tmp32 |= ((unsigned int)buf[(4 * i) + 1]) << 8; - tmp32 |= ((unsigned int)buf[(4 * i) + 2]) << 16; - tmp32 |= ((unsigned int)buf[(4 * i) + 3]) << 24; - - if (tmp32 & (1<<31)) { - msg_cdbg(" Flash chip size >= 4 Gb/ 500 MB not supported.\n"); + dw = 1; + tmp32 = buf[(4 * dw) + 0]; + tmp32 |= ((unsigned int)buf[(4 * dw) + 1]) << 8; + tmp32 |= ((unsigned int)buf[(4 * dw) + 2]) << 16; + tmp32 |= ((unsigned int)buf[(4 * dw) + 3]) << 24; + + if (tmp32 & (1 << 31)) { + msg_cdbg(" Flash chip size >= 4 Gb/500 MB not supported.\n"); return 1; } total_size = (tmp32 & 0x7FFFFFFF) / 8; f->total_size = total_size / 1024; msg_cspew(" Flash chip size is %d kB.\n", f->total_size);
- i = 8; + dw = 8; for(j = 0; j < 4; j++) { /* 8 double words from the start + 2 words for every eraser */ - bsize = 2^(buf[(4 * i) + (2 * j)]); - if (bsize == 0) + tmp32 = buf[(4 * dw) + (2 * j)]; + if (tmp32 == 0) { + msg_cspew(" Block eraser %d is unused.\n", j); continue; + } + if (tmp32 >= 31) { + msg_cspew(" Block size of eraser %d (2^%d) is too big." + "\n", j, tmp32); + continue; + } + bsize = 1 << (tmp32); /* bsize = 2 ^ field */
- tmp32 = buf[(4 * i) + (2 * j) + 1]; + tmp32 = buf[(4 * dw) + (2 * j) + 1]; switch(tmp32){ case 0x00: case 0xff:
-
Stefan Tauner