added common readmem/writemem implementation with alignment and memory range checking
changed pif and goodfet to use common readmem/writemem
This commit is contained in:
zcsahok
parent
70a5480c15
commit
38ea6143cd
213
drivers/device.c
213
drivers/device.c
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@ -19,7 +19,6 @@
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#include <string.h>
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#include "output.h"
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#include "device.h"
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#include "bytes.h"
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device_t device_default;
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@ -256,3 +255,215 @@ int device_erase(device_erase_type_t et, address_t addr)
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return device_default->type->erase(device_default, et, addr);
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}
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static const struct chipinfo default_chip = {
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.name = "DefaultChip",
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.bits = 20,
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.memory = {
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{
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.name = "DefaultFlash",
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.type = CHIPINFO_MEMTYPE_FLASH,
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.bits = 20,
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.mapped = 1,
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.size = 0xff000,
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.offset = 0x01000,
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.seg_size = 0,
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.bank_size = 0,
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.banks = 1,
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},
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{
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.name = "DefaultRam",
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.type = CHIPINFO_MEMTYPE_RAM,
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.bits = 20,
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.mapped = 1,
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.size = 0x01000,
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.offset = 0x00000,
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.seg_size = 0,
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.bank_size = 0,
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.banks = 1,
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},
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{0}
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},
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};
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/* Given an address range, specified by a start and a size (in bytes),
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* return a size which is trimmed so as to not overrun a region boundary
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* in the chip's memory map.
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*
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* The single region occupied is optionally returned in m_ret. If the
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* range doesn't start in a valid region, it's trimmed to the start of
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* the next valid region, and m_ret is NULL.
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*/
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address_t check_range(const struct chipinfo *chip,
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address_t addr, address_t size,
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const struct chipinfo_memory **m_ret)
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{
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if (!chip) {
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chip = &default_chip;
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}
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const struct chipinfo_memory *m =
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chipinfo_find_mem_by_addr(chip, addr);
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if (m) {
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if (m->offset > addr) {
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address_t n = m->offset - addr;
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if (size > n)
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size = n;
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m = NULL;
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} else if (addr + size > m->offset + m->size) {
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size = m->offset + m->size - addr;
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}
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}
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*m_ret = m;
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return size;
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}
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/* Read bytes from device taking care of memory types.
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* Function read_words is only called for existing memory ranges and
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* with a word aligned address.
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* Non-existing memory locations read as 0x55.
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* returns 0 on success, -1 on failure
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*/
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int readmem(device_t dev, address_t addr,
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uint8_t *mem, address_t len,
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int (*read_words)(device_t dev,
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const struct chipinfo_memory *m,
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address_t addr, address_t len,
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uint8_t *data)
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)
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{
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const struct chipinfo_memory *m;
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if (!len)
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return 0;
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/* Handle unaligned start */
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if (addr & 1) {
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uint8_t data[2];
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check_range(dev->chip, addr - 1, 2, &m);
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if (!m)
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data[1] = 0x55;
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else if (read_words(dev, m, addr - 1, 2, data) < 0)
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return -1;
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mem[0] = data[1];
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addr++;
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mem++;
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len--;
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}
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/* Read aligned blocks */
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while (len >= 2) {
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int rlen = check_range(dev->chip, addr, len & ~1, &m);
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if (!m)
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memset(mem, 0x55, rlen);
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else {
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rlen = read_words(dev, m, addr, rlen, mem);
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if (rlen < 0)
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return -1;
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}
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addr += rlen;
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mem += rlen;
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len -= rlen;
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}
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/* Handle unaligned end */
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if (len) {
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uint8_t data[2];
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check_range(dev->chip, addr, 2, &m);
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if (!m)
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data[0] = 0x55;
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else if (read_words(dev, m, addr, 2, data) < 0)
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return -1;
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mem[0] = data[0];
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}
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return 0;
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}
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/* Write bytes to device taking care of memory types.
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* Functions write_words and read_words are only called for existing memory ranges and
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* with a word aligned address and length.
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* Writes to non-existing memory locations fail.
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* returns 0 on success, -1 on failure
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*/
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int writemem(device_t dev, address_t addr,
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const uint8_t *mem, address_t len,
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int (*write_words)(device_t dev,
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const struct chipinfo_memory *m,
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address_t addr, address_t len,
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const uint8_t *data),
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int (*read_words)(device_t dev,
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const struct chipinfo_memory *m,
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address_t addr, address_t len,
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uint8_t *data)
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)
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{
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const struct chipinfo_memory *m;
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if (!len)
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return 0;
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/* Handle unaligned start */
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if (addr & 1) {
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uint8_t data[2];
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check_range(dev->chip, addr - 1, 2, &m);
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if (!m)
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goto fail; // fail on unmapped regions
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if (read_words(dev, m, addr - 1, 2, data) < 0)
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return -1;
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data[1] = mem[0];
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if (write_words(dev, m, addr - 1, 2, data) < 0)
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return -1;
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addr++;
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mem++;
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len--;
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}
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while (len >= 2) {
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int wlen = check_range(dev->chip, addr, len & ~1, &m);
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if (!m)
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goto fail; // fail on unmapped regions
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wlen = write_words(dev, m, addr, wlen, mem);
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if (wlen < 0)
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return -1;
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addr += wlen;
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mem += wlen;
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len -= wlen;
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}
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/* Handle unaligned end */
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if (len) {
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uint8_t data[2];
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check_range(dev->chip, addr, 2, &m);
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if (!m)
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goto fail; // fail on unmapped regions
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if (read_words(dev, m, addr, 2, data) < 0)
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return -1;
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data[0] = mem[0];
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if (write_words(dev, m, addr, 2, data) < 0)
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return -1;
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}
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return 0;
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fail:
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printc_err("writemem failed at 0x%x\n", addr);
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return -1;
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}
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@ -23,6 +23,7 @@
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#include "util.h"
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#include "powerbuf.h"
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#include "chipinfo.h"
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#include "bytes.h"
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struct device;
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typedef struct device *device_t;
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@ -182,4 +183,28 @@ extern device_t device_default;
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int device_erase(device_erase_type_t et, address_t addr);
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address_t check_range(const struct chipinfo *chip,
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address_t addr, address_t size,
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const struct chipinfo_memory **m_ret);
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int readmem(device_t dev, address_t addr,
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uint8_t *mem, address_t len,
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int (*read_words)(device_t dev,
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const struct chipinfo_memory *m,
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address_t addr, address_t len,
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uint8_t *data)
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);
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int writemem(device_t dev, address_t addr,
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const uint8_t *mem, address_t len,
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int (*write_words)(device_t dev,
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const struct chipinfo_memory *m,
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address_t addr, address_t len,
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const uint8_t *data),
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int (*read_words)(device_t dev,
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const struct chipinfo_memory *m,
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address_t addr, address_t len,
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uint8_t *data)
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);
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#endif
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@ -67,6 +67,14 @@
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#define MAX_LEN 1024
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#define MAX_MEM_BLOCK 128
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struct goodfet {
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struct device base;
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sport_t serial_fd;
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};
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/************************************************************************
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* GoodFET protocol handling
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*/
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@ -200,13 +208,20 @@ fail:
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* GoodFET MSP430 JTAG operations
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*/
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/* Read a word-aligned block from any kind of memory. */
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static int read_words(sport_t fd, address_t addr,
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address_t len, uint8_t *data)
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/* Read a word-aligned block from any kind of memory.
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* returns the number of bytes read or -1 on failure
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*/
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static int read_words(device_t dev, const struct chipinfo_memory *m,
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address_t addr, address_t len, uint8_t *data)
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{
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struct goodfet *gc = (struct goodfet *)dev;
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sport_t fd = gc->serial_fd;
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struct packet pkt;
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uint8_t req[6];
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if (len > MAX_MEM_BLOCK)
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len = MAX_MEM_BLOCK;
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req[0] = addr;
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req[1] = addr >> 8;
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req[2] = addr >> 16;
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@ -227,7 +242,7 @@ static int read_words(sport_t fd, address_t addr,
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}
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memcpy(data, pkt.data, pkt.len);
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return 0;
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return len;
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}
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/* Write a word to RAM. */
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@ -277,32 +292,32 @@ static int write_flash_block(sport_t fd, address_t addr,
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return 0;
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}
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/* Write a single byte by reading and rewriting a word. */
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static int write_byte(sport_t fd, address_t addr, uint8_t value)
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/* Write a word-aligned block to any kind of memory.
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* returns the number of bytes written or -1 on failure
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*/
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static int write_words(device_t dev, const struct chipinfo_memory *m,
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address_t addr, address_t len, const uint8_t *data)
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{
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address_t aligned = addr & ~1;
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uint8_t data[2];
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struct goodfet *gc = (struct goodfet *)dev;
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sport_t fd = gc->serial_fd;
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int r;
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if (read_words(fd, aligned, 2, data) < 0)
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goto fail;
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if (len > MAX_MEM_BLOCK)
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len = MAX_MEM_BLOCK;
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data[addr & 1] = value;
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if (m->type != CHIPINFO_MEMTYPE_FLASH) {
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len = 2;
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r = write_ram_word(fd, addr, r16le(data));
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} else {
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r = write_flash_block(fd, addr, len, data);
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}
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if (addr < 0x1000)
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r = write_ram_word(fd, aligned,
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((uint16_t)data[0]) |
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(((uint16_t)data[1]) << 8));
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else
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r = write_flash_block(fd, aligned, 2, data);
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if (r < 0) {
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printc_err("goodfet: write_words at address 0x%x failed\n", addr);
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return -1;
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}
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if (r < 0)
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goto fail;
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return 0;
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fail:
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printc_err("good_fet: write_byte at address 0x%x failed\n", addr);
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return -1;
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return len;
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}
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static int init_device(sport_t fd)
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@ -358,120 +373,16 @@ static int init_device(sport_t fd)
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* MSPDebug Device interface
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*/
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struct goodfet {
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struct device base;
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sport_t serial_fd;
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};
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static int goodfet_readmem(device_t dev_base, address_t addr,
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uint8_t *mem, address_t len)
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{
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struct goodfet *gc = (struct goodfet *)dev_base;
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if (!len)
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return 0;
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/* Handle unaligned start */
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if (addr & 1) {
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uint8_t data[2];
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if (read_words(gc->serial_fd, addr ^ 1, 2, data) < 0)
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goto fail;
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mem[0] = data[1];
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addr++;
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mem++;
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len--;
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}
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/* Read aligned blocks */
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while (len >= 2) {
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int plen = MAX_MEM_BLOCK;
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if (plen > len)
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plen = len;
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plen &= ~1;
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if (read_words(gc->serial_fd, addr, plen, mem) < 0)
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goto fail;
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addr += plen;
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mem += plen;
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len -= plen;
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}
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/* Handle unaligned end */
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if (len) {
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uint8_t data[2];
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if (read_words(gc->serial_fd, addr, 2, data) < 0)
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goto fail;
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mem[0] = data[0];
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}
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return 0;
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fail:
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printc_err("goodfet: readmem failed at 0x%x\n", addr);
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return -1;
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return readmem(dev_base, addr, mem, len, read_words);
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}
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static int goodfet_writemem(device_t dev_base, address_t addr,
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const uint8_t *mem, address_t len)
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{
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struct goodfet *gc = (struct goodfet *)dev_base;
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if (!len)
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return 0;
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/* Handle unaligned start */
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if (addr & 1) {
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if (write_byte(gc->serial_fd, addr, mem[0]) < 0)
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goto fail;
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addr++;
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mem++;
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len--;
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}
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while (len >= 2) {
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if (addr < 0x1000) {
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if (write_ram_word(gc->serial_fd, addr,
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((uint16_t)mem[0]) |
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(((uint16_t)mem[1]) << 8)) < 0)
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goto fail;
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addr += 2;
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mem += 2;
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len -= 2;
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} else {
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int plen = MAX_MEM_BLOCK;
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if (plen > len)
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plen = len;
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plen &= ~1;
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if (write_flash_block(gc->serial_fd, addr,
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plen, mem) < 0)
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goto fail;
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addr += plen;
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mem += plen;
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len -= plen;
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}
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}
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/* Handle unaligned end */
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if (len && (write_byte(gc->serial_fd, addr, mem[0]) < 0))
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goto fail;
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return 0;
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fail:
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printc_err("goodfet: writemem failed at 0x%x\n", addr);
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return -1;
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return writemem(dev_base, addr, mem, len, write_words, read_words);
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}
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static int goodfet_setregs(device_t dev_base, const address_t *regs)
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137
drivers/pif.c
137
drivers/pif.c
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@ -34,15 +34,23 @@
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#include "jtaglib.h"
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#include "ctrlc.h"
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struct pif_device {
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struct device base;
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struct jtdev jtag;
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};
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/*============================================================================*/
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/* pif MSP430 JTAG operations */
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/*----------------------------------------------------------------------------*/
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/* Read a word-aligned block from any kind of memory */
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static int read_words( struct jtdev *p, address_t addr,
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address_t len,
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uint8_t* data )
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/* Read a word-aligned block from any kind of memory
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* returns the number of bytes read or -1 on failure
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*/
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static int read_words(device_t dev, const struct chipinfo_memory *m,
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address_t addr, address_t len, uint8_t *data)
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{
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struct pif_device *pif = (struct pif_device *)dev;
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struct jtdev *p = &pif->jtag;
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unsigned int index;
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unsigned int word;
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|
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@ -52,18 +60,15 @@ static int read_words( struct jtdev *p, address_t addr,
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data[index+1] = (word >> 8) & 0x00ff;
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}
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return p->failed ? -1 : 0;
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return p->failed ? -1 : len;
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}
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|
||||
/*----------------------------------------------------------------------------*/
|
||||
/* Write a word to RAM */
|
||||
int write_ram_word( struct jtdev *p, address_t addr,
|
||||
static int write_ram_word( struct jtdev *p, address_t addr,
|
||||
uint16_t value )
|
||||
{
|
||||
unsigned int word;
|
||||
|
||||
word = ((value & 0x00ff) << 8) | ((value & 0xff00) >> 8);
|
||||
jtag_write_mem( p, 16, addr, word );
|
||||
jtag_write_mem( p, 16, addr, value );
|
||||
|
||||
return p->failed ? -1 : 0;
|
||||
}
|
||||
|
|
@ -95,29 +100,29 @@ static int write_flash_block( struct jtdev *p, address_t addr,
|
|||
return p->failed ? -1 : 0;
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
/* Write a single byte by reading and rewriting a word. */
|
||||
static int write_byte( struct jtdev *p,
|
||||
address_t addr,
|
||||
uint8_t value )
|
||||
/* Write a word-aligned block to any kind of memory.
|
||||
* returns the number of bytes written or -1 on failure
|
||||
*/
|
||||
static int write_words(device_t dev, const struct chipinfo_memory *m,
|
||||
address_t addr, address_t len, const uint8_t *data)
|
||||
{
|
||||
address_t aligned = addr & ~1;
|
||||
uint8_t data[2];
|
||||
unsigned int word;
|
||||
struct pif_device *pif = (struct pif_device *)dev;
|
||||
struct jtdev *p = &pif->jtag;
|
||||
int r;
|
||||
|
||||
read_words(p, aligned, 2, data);
|
||||
data[addr & 1] = value;
|
||||
|
||||
if ( ADDR_IN_FLASH(addr) ) {
|
||||
/* program in FLASH */
|
||||
write_flash_block(p, aligned, 2, data);
|
||||
if (m->type != CHIPINFO_MEMTYPE_FLASH) {
|
||||
len = 2;
|
||||
r = write_ram_word(p, addr, r16le(data));
|
||||
} else {
|
||||
/* write to RAM */
|
||||
word = (uint16_t)data[1] | ((uint16_t)data[0] << 8);
|
||||
write_ram_word(p, aligned, word);
|
||||
r = write_flash_block(p, addr, len, data);
|
||||
}
|
||||
|
||||
return p->failed ? -1 : 0;
|
||||
if (r < 0) {
|
||||
printc_err("pif: write_words at address 0x%x failed\n", addr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
|
|
@ -139,11 +144,6 @@ static int init_device(struct jtdev *p)
|
|||
|
||||
/*===== MSPDebug Device interface ============================================*/
|
||||
|
||||
struct pif_device {
|
||||
struct device base;
|
||||
struct jtdev jtag;
|
||||
};
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
static int refresh_bps(struct pif_device *dev)
|
||||
{
|
||||
|
|
@ -188,38 +188,8 @@ static int pif_readmem( device_t dev_base,
|
|||
address_t len )
|
||||
{
|
||||
struct pif_device *dev = (struct pif_device *)dev_base;
|
||||
uint8_t data[2];
|
||||
|
||||
dev->jtag.failed = 0;
|
||||
|
||||
if ( len > 0 ) {
|
||||
/* Handle unaligned start */
|
||||
if (addr & 1) {
|
||||
if (read_words(&dev->jtag, addr & ~1, 2, data) < 0)
|
||||
return -1;
|
||||
mem[0] = data[1];
|
||||
addr++;
|
||||
mem++;
|
||||
len--;
|
||||
}
|
||||
|
||||
/* Read aligned blocks */
|
||||
if (len >= 2) {
|
||||
if (read_words(&dev->jtag, addr, len & ~1, mem) < 0)
|
||||
return -1;
|
||||
addr += len & ~1;
|
||||
mem += len & ~1;
|
||||
len &= 1;
|
||||
}
|
||||
|
||||
/* Handle unaligned end */
|
||||
if (len == 1) {
|
||||
if (read_words(&dev->jtag, addr, 2, data) < 0)
|
||||
return -1;
|
||||
mem[0] = data[0];
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
return readmem(dev_base, addr, mem, len, read_words);
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
|
|
@ -229,45 +199,8 @@ static int pif_writemem( device_t dev_base,
|
|||
address_t len )
|
||||
{
|
||||
struct pif_device *dev = (struct pif_device *)dev_base;
|
||||
|
||||
dev->jtag.failed = 0;
|
||||
|
||||
if (len > 0)
|
||||
{
|
||||
/* Handle unaligned start */
|
||||
if (addr & 1) {
|
||||
if (write_byte(&dev->jtag, addr, mem[0]) < 0)
|
||||
return -1;
|
||||
addr++;
|
||||
mem++;
|
||||
len--;
|
||||
}
|
||||
|
||||
/* Write aligned blocks */
|
||||
while (len >= 2) {
|
||||
if ( ADDR_IN_FLASH(addr) ) {
|
||||
if (write_flash_block(&dev->jtag, addr, len & ~1, mem) < 0)
|
||||
return -1;
|
||||
addr += len & ~1;
|
||||
mem += len & ~1;
|
||||
len &= 1;
|
||||
} else {
|
||||
if (write_ram_word(&dev->jtag, addr,
|
||||
(uint16_t)mem[1] | ((uint16_t)mem[0] << 8)) < 0)
|
||||
return -1;
|
||||
addr += 2;
|
||||
mem += 2;
|
||||
len -= 2;
|
||||
}
|
||||
}
|
||||
|
||||
/* Handle unaligned end */
|
||||
if (len == 1) {
|
||||
if (write_byte(&dev->jtag, addr, mem[0]) < 0)
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
return writemem(dev_base, addr, mem, len, write_words, read_words);
|
||||
}
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
|
|
|
|||
|
|
@ -28,8 +28,6 @@
|
|||
|
||||
#include "device.h"
|
||||
|
||||
#define ADDR_IN_FLASH(a) ( (a) >= 0x1000 )
|
||||
|
||||
/* pif implementation */
|
||||
extern const struct device_class device_pif;
|
||||
/* share wiht gpio implementation */
|
||||
|
|
|
|||
|
|
@ -136,40 +136,6 @@ static hal_proto_fid_t map_fid(const struct v3hil *h, hal_proto_fid_t src)
|
|||
return dst ? dst : src;
|
||||
}
|
||||
|
||||
/* Given an address range, specified by a start and a size (in bytes),
|
||||
* return a size which is trimmed so as to not overrun a region boundary
|
||||
* in the chip's memory map.
|
||||
*
|
||||
* The single region occupied is optionally returned in m_ret. If the
|
||||
* range doesn't start in a valid region, it's trimmed to the start of
|
||||
* the next valid region, and m_ret is NULL.
|
||||
*/
|
||||
static address_t check_range(const struct chipinfo *chip,
|
||||
address_t addr, address_t size,
|
||||
const struct chipinfo_memory **m_ret)
|
||||
{
|
||||
const struct chipinfo_memory *m =
|
||||
chipinfo_find_mem_by_addr(chip, addr);
|
||||
|
||||
if (m) {
|
||||
if (m->offset > addr) {
|
||||
address_t n = m->offset - addr;
|
||||
|
||||
if (size > n)
|
||||
size = n;
|
||||
|
||||
m = NULL;
|
||||
} else if (addr + size > m->offset + m->size) {
|
||||
size = m->offset + m->size - addr;
|
||||
}
|
||||
}
|
||||
|
||||
if (m)
|
||||
*m_ret = m;
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
void v3hil_init(struct v3hil *h, transport_t trans,
|
||||
hal_proto_flags_t flags)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue