X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/72f5882239bb88b8a68f305802e0dde37a975604..refs/tags/hexrel-6.6:/avr/env.c diff --git a/avr/env.c b/avr/env.c index 3488afc..f067940 100644 --- a/avr/env.c +++ b/avr/env.c @@ -1,7 +1,13 @@ +/* + * (C) Copyright 2014 Leo C. + * + * SPDX-License-Identifier: GPL-2.0 + */ + #include "common.h" #include #include - +#include #include #include "config.h" @@ -9,575 +15,413 @@ #include "xmalloc.h" #include "crc.h" #include "command.h" - #include "env.h" +#define ENV_SIZE (CONFIG_ENV_SIZE - sizeof(uint16_t) -1) +#define ACTIVE_FLAG 1 +#define OBSOLETE_FLAG 0 -#define DELIM "\0" -#define ENV_SIZE CONFIG_ENV_SIZE-2 - - -#define ENV_GET_VAL (1<<0) +#define ENVLIST_DELETE (1<<0) /* - * Debugging - * - * TODO: move elsewhere + * Default Environment */ -#include - -static void print_blanks(uint_fast8_t count) -{ - while(count--) - putchar(' '); -} - - -void dump_ram(const uint8_t *startaddr, int len, char *title) -{ - uint8_t llen = 16; - uint8_t pre = (size_t) startaddr % 16; - const uint8_t *addr = (uint8_t *) ((size_t) startaddr & ~0x0f); - len += pre; - uint8_t i; - - if (title && *title) - printf_P(PSTR("%s\n"),title); - - while (len) { - if (len < 16) - llen = len; - - printf_P(PSTR(" %.4x:"), (size_t) addr); - print_blanks(3 * pre); - for (i = pre; i < llen; i++) - printf_P(PSTR(" %.2x"), addr[i]); - print_blanks(3 * (16 - i + 1) + pre); - for (i = pre; i < llen; i++) - printf_P(PSTR("%c"), isprint(addr[i]) ? addr[i] : '.'); - putchar('\n'); - - pre = 0; - addr += 16; - len -= llen; - } -} - -void dump_heap(void) -{ - extern unsigned int __brkval; - - dump_ram((uint8_t *) __malloc_heap_start, - __brkval - (unsigned int) __malloc_heap_start, - "=== Heap:"); -} - -/* TODO: combine with dump_ram() */ -void dump_eep(const uint8_t *addr, int len) -{ - int i; - uint8_t buf[16]; - - printf_P(PSTR("eeprom dump:")); - while (len) { - printf_P(PSTR("\n 0x%.4x:"), (unsigned int) addr); - for (i = 0; i<16; i++) - buf[i] = eeprom_read_byte(addr + i); - for (i = 0; i<16; i++) - printf_P(PSTR(" %.2x"), buf[i]); - printf_P(PSTR(" ")); - for (i = 0; i<16; i++) - printf_P(PSTR("%c"), isprint(buf[i]) ? buf[i] : '.'); - - addr += 16; - len -= len > 16 ? 16 : len; - } - putchar('\n'); -} +#define DELIM "\0" const FLASH char default_env[] = { - "bootdelay=" "3" DELIM - "bootcmd=" "echo hallo" DELIM - "baudrate=" "115200" DELIM + ENV_BAUDRATE "=" "115200" DELIM + ENV_BOOTDELAY "=" "3" DELIM + ENV_BOOTCMD "=" "pin ${pins}; loadcpm3; go ${startaddress}" DELIM + ENV_CPM3_SYSFILE "=" CONFIG_CPM3_SYSFILE DELIM + ENV_PINALIAS "=" "0:PG5,1:PG4,2:PB4,3:PB5,4:PB6,5:PB7," + "6:PG3,7:PG2,8:PG1,9:PG0,10:PE7" DELIM + ENV_STARTADDRESS "=" "0" DELIM + "pins" "=" "2,8 low 9 high 3 2" DELIM DELIM }; +/* EEPROM storage */ typedef struct environment_s { uint16_t crc; /* CRC16 over data bytes */ + uint8_t flags; /* active/obsolete flags */ char data[ENV_SIZE]; /* Environment data */ } env_t; - +/* */ typedef struct env_item_s { -#define EF_N_EEP (1<<7) /* Variable name is in EEPROM */ -#define EF_V_EEP (1<<6) /* Variable value is in EEPROM */ -#define EF_DIRTY (1<<0) /* Variable is new or value changed */ - uint8_t flags; - union { - uint16_t eep; - char *ram; - } name; - union { - uint16_t eep; - char *ram; - } val; + char * envvar; } env_item_t; +static uint8_t env_valid; static env_item_t env_list[CONFIG_ENVVAR_MAX]; static int entrycount; -static char env_get_char(uint16_t index) +static +char env_get_char(uint16_t index) { unsigned int off = CONFIG_ENV_OFFSET; + char ret; - return (char) eeprom_read_byte((const uint8_t *)off + index + + switch (env_valid) { + case 2: + off += CONFIG_ENV_SIZE; + case 1: + ret = (char) eeprom_read_byte((const uint8_t *)off + index + offsetof(env_t, data)); -} - - -uint16_t ee_name_get(char *buf, env_item_t *ep) -{ - int i = 0; - char c; - - if (ep->flags & EF_N_EEP) { + break; - while ((c = env_get_char(ep->name.eep + i)) != '=' && - c != '\0' && i < CONFIG_SYS_ENV_NAMELEN) { - - buf[i] = c; - i++; - } - if (i > 0 && c != '=') { - debug("** ee_name: '%s' not '=' terminated!\n", buf); - } - } else { - strncpy(buf, ep->name.ram, CONFIG_SYS_ENV_NAMELEN); - i = strnlen(buf, CONFIG_SYS_ENV_NAMELEN); + default: + ret = default_env[index]; } - buf[i] = '\0'; - return i; -} - -uint16_t ee_val_get(char *buf, uint16_t index, int len) -{ - int i = 0; - char c; - - while ((c = env_get_char (index + i)) != '\0' && i < len) { - buf[i] = c; - i++; - }; - - buf[i] = '\0'; - - /* TODO: len check */ - - return i; + return ret; } -static -int comp_env_key_item(const void *key, const void *item) -{ - char buf[CONFIG_SYS_ENV_NAMELEN+1]; - env_item_t *ep = (env_item_t *) item; - - ee_name_get(buf, ep); - - return strcmp((char *) key, buf); -} + +static const FLASH char *comp_key; static int comp_env_items(const void *m1, const void *m2) { - char b1[CONFIG_SYS_ENV_NAMELEN+1]; - char b2[CONFIG_SYS_ENV_NAMELEN+1]; - env_item_t *ep1 = (env_item_t *) m1; env_item_t *ep2 = (env_item_t *) m2; - - ee_name_get(b1, ep1); - ee_name_get(b2, ep2); - - return strcmp(b1, b2); -} - -#if 0 -env_item_t * ee_entry_get(const char *s, env_item_t *ep, uint_fast8_t flag) -{ - char name[CONFIG_SYS_ENV_NAMELEN+1]; - uint16_t idx = 0; - int nlen; - -//printf_P(PSTR("*** ee_entry_get: >>>>>>>>> ENTER <<<<<<<<<\n")); - - - while ((nlen = ee_name_get(name, idx)) != 0 && idx < CONFIG_ENV_SIZE) { - -//printf_P(PSTR("** idx: %d, name: '%s', s: '%s', nlen: %d, cpres:%d\n"), -// idx, name, s, nlen, strncmp(name, s, nlen)); - - if (strncmp(name, s, nlen) == 0) - break; - - idx += nlen + 1; - while (env_get_char(idx++) != 0) - ; - } - - if (nlen) { - char *vp; - ep->flags = EF_N_EEP; - ep->name.eep = idx; - if (flag & ENV_GET_VAL) { - vp = xmalloc(CONFIG_SYS_CBSIZE); - nlen = ee_val_get(vp, idx + nlen + 1, CONFIG_SYS_CBSIZE); - ep->val = xrealloc(vp, nlen + 1); - } else - ep->val = NULL; - - -//printf_P(PSTR("*** ee_entry_get: >>>>>> LEAVE 0x%.4x <<<<<\n"), -// (unsigned int) ep); - return ep; - } - -//printf_P(PSTR("*** ee_entry_get: >>>>>> LEAVE <<<<<\n")); - return NULL; -} -#endif - -#if 0 -static char p_env_name_buf[CONFIG_SYS_ENV_NAMELEN+1]; -static char *dbg_p_env_name(env_item_t *p) -{ - if (p->flags & EF_N_EEP) { - if (ee_name_get(p_env_name_buf, p) != 0) - return p_env_name_buf; - else - return ""; - } - return ""; + if (ep1 == NULL) + return - strcmp_P(ep2->envvar, comp_key); + else + return strcmp(ep1->envvar, ep2->envvar); } -#endif -int env_item_print(env_item_t *ep) + +env_item_t *envlist_search(const MEMX char *name) { - char buf[CONFIG_SYS_ENV_NAMELEN+1]; - int len; - env_item_t e = *ep; - - ee_name_get(buf, ep); - len = printf_P(PSTR("%s="), buf); - - if (e.val.ram != NULL) { - while (1) { - char c; - if (e.flags & EF_V_EEP) - c = env_get_char(e.val.eep++); - else - c = *e.val.ram++; - - if (c != '\0') { - putchar(c); - len++; - } else - break; - } - } - putchar('\n'); - len ++; +#ifdef __MEMX + if (__builtin_avr_flash_segment(name) != -1) { + comp_key = name; + return bsearch(0, env_list, entrycount, + sizeof(env_item_t), comp_env_items); + } else { - return len; -} + env_item_t e; + e.envvar = (char *) name; + return bsearch(&e, env_list, entrycount, + sizeof(env_item_t), comp_env_items); + } +#else + env_item_t e; + e.envvar = (char *) name; -static env_item_t *envlist_search(const char *name) -{ - return bsearch(name, env_list, entrycount, - sizeof(env_item_t), comp_env_key_item); + return bsearch(&e, env_list, entrycount, + sizeof(env_item_t), comp_env_items); +#endif /* __MEMX */ } - -#if 0 -env_item_t *envlist_insert(const char *key, env_item_t *e) -{ - const size_t size = sizeof(env_item_t); - if (entrycount < CONFIG_ENVVAR_MAX) { - env_list[entrycount++] = *e; - qsort(env_list, entrycount, size, comp_env_items); - - return bsearch(key, env_list, entrycount, - size, comp_env_key_item); - - } else - return NULL; -} -#endif +static env_item_t *envlist_enter(env_item_t *e) { - char *key = e->name.ram; const size_t size = sizeof(env_item_t); env_item_t *ep; - - ep = bsearch(key, env_list, entrycount, - size, comp_env_key_item); - + + ep = bsearch(e, env_list, entrycount, + size, comp_env_items); + if (ep == NULL) { if (entrycount < CONFIG_ENVVAR_MAX) { - + env_list[entrycount++] = *e; qsort(env_list, entrycount, size, comp_env_items); - ep = bsearch(key, env_list, entrycount, - size, comp_env_key_item); - } - } else { - if ((ep->flags & EF_V_EEP) == 0) { - free(ep->val.ram); - } - ep->val.ram = e->val.ram; - } - - if (ep != NULL) { - ep->flags |= EF_DIRTY; - ep->flags &= ~EF_V_EEP; - - if ((ep->flags & EF_N_EEP) == 0) { - int nlen = strnlen(key, CONFIG_SYS_ENV_NAMELEN); - char *name = xmalloc(nlen + 1); - if (name == NULL) { - printf_P(PSTR("## Can't malloc %d bytes\n"), - nlen + 1); - return NULL; - } - strcpy(name, key); - name[nlen] = '\0'; - ep->name.ram = name; + ep = bsearch(e, env_list, entrycount, + size, comp_env_items); } + } else { + free(ep->envvar); + ep->envvar = e->envvar; } - return ep; -} - - -static env_item_t *envlist_get(const char *name, uint_fast8_t flag) -{ - env_item_t *ep; - - ep = envlist_search(name); - - if (ep != NULL && (flag & ENV_GET_VAL)) { - if (ep->flags & EF_V_EEP) { - char *vp; - uint_fast8_t len; - vp = xmalloc(CONFIG_SYS_CBSIZE); - len = ee_val_get(vp, ep->val.eep, CONFIG_SYS_CBSIZE); - ep->val.ram = xrealloc(vp, len + 1); - ep->flags &= ~EF_V_EEP; - } - } - return ep; } -static int envlist_delete(const char *name) +static +int env_item_delete(env_item_t *ep) { - size_t size = sizeof(env_item_t); - env_item_t *ep = bsearch(name, env_list, entrycount, - sizeof(env_item_t), comp_env_key_item); - int rc = 0; + if (entrycount == 0) + return -1; - if (ep != NULL) { - - if ((ep->flags & EF_V_EEP) == 0) - free(ep->val.ram); - if ((ep->flags & EF_N_EEP) == 0) - free(ep->name.ram); + free(ep->envvar); - entrycount--; - memmove(ep, ep + 1, (env_list - ep)*size + entrycount*size); - - rc = 1; - } -#if 0 - dump_ram((uint8_t *) &env_list[0], entrycount * sizeof(env_item_t), - "=== env_list:"); - dump_heap(); - debug("** entrycount: %d\n", entrycount); - for (int i=0; ival.ram; -#if 0 - dump_ram((uint8_t *) &env_list[0], entrycount * sizeof(env_item_t), - "=== env_list:"); - dump_heap(); - debug("** entrycount: %d\n", entrycount); - for (int i=0; i= ENV_SIZE) + return -1; + } -int set_default_env(void) -{ - char buf[64]; - uint16_t crc = 0xffff; - uint16_t eep = CONFIG_ENV_OFFSET + offsetof(env_t, data); - unsigned int len = CONFIG_ENV_SIZE - offsetof(env_t, data); - unsigned int i, src = 0; - char c = 0xff, c0 = c; -#if 0 -printf_P(PSTR("\n\n** set_default_env()\n")); -#endif - while (len) { - - memcpy_P(buf, default_env+src, sizeof(buf)); - - for (i=0; i < (len < sizeof(buf) ? len : sizeof(buf)) && - !(c == 0 && c0 == 0); - i++) - { - c0 = c; c = buf[i]; - crc = crc16(crc, c); + np = (char *) xmalloc(len+1); + if (np == NULL) { + printf_P(PSTR("## Can't malloc %d bytes\n"), len+1); + return 1; } - - eeprom_update_block(buf, (char *) eep, i); -#if 0 - printf_P(PSTR("eeprom_update_block: eep: 0x%.4x, i:%d\n"), - (unsigned int) eep, i); - dump_ram((uint8_t *) buf, i, "=== buf:"); - dump_eep((const uint8_t *) eep, i); -#endif - if (c == 0 && c0 == 0) - len = 0; - if (len > sizeof(buf)) - len -= sizeof(buf); - src += sizeof(buf); - eep += sizeof(buf); + e.envvar = np; + ef = 0; + while ((c = env_get_char(index++)) != '\0') { + if (!ef && (c == '=')) { + *np = '\0'; + ef = 1; + } else + *np = c; + np++; + } + *np = '\0'; + envlist_enter(&e); } -#if 0 - dump_eep(0, 128); -#endif + + return 0; } -int env_check(void) +static +uint16_t env_crc(uint16_t data_offset) { - uint16_t crc, stored_crc; + uint16_t crc; uint16_t i; char c, c0; - debug("\n\n** env_check()\n"); - - - /* read old CRC */ - stored_crc = eeprom_read_word((const uint16_t *) CONFIG_ENV_OFFSET + - offsetof(env_t, crc)); crc = 0xffff; c = 0xff; - for (i = offsetof(env_t, data); - !(c == 0 && c0 == 0) && i < CONFIG_ENV_SIZE; - i++) + for (i = 0; !(c == 0 && c0 == 0) && i < ENV_SIZE; i++) { - c0 = c; - c = eeprom_read_byte((const uint8_t *) CONFIG_ENV_OFFSET + i); + c0 = c; + c = eeprom_read_byte((const uint8_t *) data_offset + i); crc = crc16(crc, c); } - debug("** crc eep: 0x%.4x, crc new: 0x%.4x\n", stored_crc, crc); - - return crc == stored_crc; + return crc ; } + +/** + * return valid env + */ +static +int env_check_valid(void) +{ + const uint16_t offset[2] = {CONFIG_ENV_OFFSET, + CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE}; + uint_fast8_t flags[2], crc_ok[2]; + int rc; + + /* read FLAGS */ + flags[0] = eeprom_read_byte ((uint8_t *) offset[0] + + offsetof(env_t, flags)); + flags[1] = eeprom_read_byte ((uint8_t *) offset[1] + + offsetof(env_t, flags)); + + /* check CRC */ + crc_ok[0] = ( + eeprom_read_word((uint16_t *) offset[0] + + offsetof(env_t, crc)) + == env_crc(offset[0] + offsetof(env_t, data)) + ); + crc_ok[1] = ( + eeprom_read_word((uint16_t *) offset[1] + + offsetof(env_t, crc)) + == env_crc(offset[1] + offsetof(env_t, data)) + ); + + if (!crc_ok[0] && !crc_ok[1]) { + rc = 0; + + } else if (crc_ok[0] && !crc_ok[1]) { + rc = 1; + } else if (!crc_ok[0] && crc_ok[1]) { + rc = 2; + } else { + /* both ok - check serial */ +#if 1 + if (flags[1] == ACTIVE_FLAG && flags[0] != ACTIVE_FLAG) + rc = 2; + else if (flags[1] == OBSOLETE_FLAG && flags[0] == 0xFF) + rc = 2; + else + rc = 1; +#else + if (flags[0] == ACTIVE_FLAG && flags[1] == OBSOLETE_FLAG) + rc = 1; + else if (flags[0] == OBSOLETE_FLAG && flags[1] == ACTIVE_FLAG) + rc = 2; + else if (flags[0] == 0xFF && flags[1] == 0) + rc = 2; + else if (flags[1] == 0xFF && flags[0] == 0) + rc = 1; + else /* flags are equal - almost impossible */ + rc = 1; +#endif + } + + return rc; +} + + int env_init(void) { - char name[CONFIG_SYS_ENV_NAMELEN+1]; - uint16_t idx = 0; - int nlen; - env_item_t e; - - e.flags = EF_N_EEP | EF_V_EEP; - e.name.eep = idx; - while ((nlen = ee_name_get(name, &e)) != 0 && idx < ENV_SIZE) { - - if (entrycount <= CONFIG_ENVVAR_MAX) { - e.val.eep = idx + nlen + 1; - - env_list[entrycount++] = e; - - idx += nlen + 1; - while (env_get_char(idx++) != 0 && idx < ENV_SIZE) - ; - e.name.eep = idx; - } else { - debug("** Too many environment variables!\n"); - break; - } + env_valid = env_check_valid(); + if (env_valid == 0) { + printf_P(PSTR("*** Warning - bad CRC, " + "using default environment\n\n")); } - qsort(env_list, entrycount, sizeof(env_item_t), comp_env_items); + envlist_import(ENVLIST_DELETE); return 0; } +char *getenv_char(const MEMX char *name) +{ + env_item_t *ep; + char *ret = NULL; + + ep = envlist_search(name); + if (ep != NULL) + ret = ep->envvar + strlen(ep->envvar) +1; + return ret; +} + +static +int env_item_save(env_item_t *ep, uint16_t offset, int space_left) +{ + int nlen, vlen; + char *var = ep->envvar; + + nlen = strlen(var); + if (nlen == 0) + return 0; + vlen = strlen(var + nlen + 1); + if (vlen == 0) + return 0; + if (nlen + vlen + 2 > space_left) + return 0; + + eeprom_update_block(var, (uint8_t *) offset, nlen); + offset += nlen; + eeprom_update_byte((uint8_t *) offset++, '='); + eeprom_update_block(var + nlen +1, (uint8_t *) offset, vlen+1); + + return nlen + vlen + 2; +} + + +static +int saveenv(void) +{ + unsigned int off = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; + unsigned int off_red = CONFIG_ENV_OFFSET; + unsigned int pos; + int len, left; + uint16_t crc; + int rc = 0; + + if (env_valid == 2) { + off = CONFIG_ENV_OFFSET; + off_red = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; + } + + eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), 0xff); + + pos = off + offsetof(env_t, data); + left = ENV_SIZE - 1; + for (int i = 0 ; i < entrycount; i++) { + len = env_item_save(&env_list[i], pos, left); + if (len == 0) { + return 1; + } + pos += len; + left -= len; + } + /* terminate list */ + eeprom_update_byte((uint8_t *) pos, 0); + crc = env_crc(off + offsetof(env_t, data)); + eeprom_update_word((uint16_t *) off + offsetof(env_t, crc), crc); + eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), + ACTIVE_FLAG); + + if (rc == 0) { + eeprom_update_byte((uint8_t *) off_red + offsetof(env_t, flags), + OBSOLETE_FLAG); + env_valid = (env_valid == 2) ? 1 : 2; + } + + return rc; +} + + +static +int env_item_print(env_item_t *ep) +{ + int len; + char *ev = ep->envvar; + + len = printf_P(PSTR("%s="), ev); + len += printf_P(PSTR("%s\n"), ev + len); + + return len; +} + + /* * Command interface: print one or all environment variables * * Returns -1 in case of error, or length of printed string */ -static int env_print(char *name) +static +int env_print(const MEMX char *name) { int len = -1; if (name) { /* print a single name */ - + env_item_t *ep = envlist_search(name); if (ep != NULL) len = env_item_print(ep); @@ -592,38 +436,6 @@ static int env_print(char *name) } - -int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, - char * const argv[]) -{ - int i; - int rcode = 0; - - (void) cmdtp; (void) flag; - - if (argc == 1) { - /* print all env vars */ - rcode = env_print(NULL); - if (rcode < 0) - return 1; - printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), - rcode, ENV_SIZE); - return 0; - } - - /* print selected env vars */ - for (i = 1; i < argc; ++i) { - int rc = env_print(argv[i]); - if (rc < 0) { - printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[i]); - ++rcode; - } - } - - return rcode; -} - - /** * Set or delete environment variable * @@ -638,14 +450,14 @@ int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, * * @return 0 if ok, 1 on error */ -static int _do_env_set(int flag, int argc, char * const argv[]) +static +command_ret_t _do_env_set(int flag, int argc, char * const argv[]) { int i, len; - char *name, *value, *s; + char *name, *value, *valp, *p; env_item_t e, *ep; (void) flag; - debug("Initial value for argc=%d\n", argc); name = argv[1]; value = argv[2]; @@ -653,12 +465,13 @@ static int _do_env_set(int flag, int argc, char * const argv[]) if (strchr(name, '=')) { printf_P(PSTR("## Error: illegal character '='" "in variable name \"%s\"\n"), name); - return 1; + return CMD_RET_FAILURE; } - if (strlen(name) > CONFIG_SYS_ENV_NAMELEN) { + len = strlen(name); + if (len > CONFIG_SYS_ENV_NAMELEN) { printf_P(PSTR("## Error: Variable name \"%s\" too long. " "(max %d characters)\n"), name, CONFIG_SYS_ENV_NAMELEN); - return 1; + return CMD_RET_FAILURE; } /* env_id++; @@ -666,41 +479,41 @@ static int _do_env_set(int flag, int argc, char * const argv[]) /* Delete only ? */ if (argc < 3 || argv[2] == NULL) { int rc = envlist_delete(name); - return !rc; + return rc ? CMD_RET_FAILURE : CMD_RET_SUCCESS; } /* * Insert / replace new value */ - for (i = 2, len = 0; i < argc; ++i) + for (i = 2, len += 1; i < argc; ++i) len += strlen(argv[i]) + 1; value = xmalloc(len); if (value == NULL) { printf_P(PSTR("## Can't malloc %d bytes\n"), len); - return 1; + return CMD_RET_FAILURE; } - for (i = 2, s = value; i < argc; ++i) { + strcpy(value, name); + valp = value + strlen(name) + 1; + for (i = 2, p = valp; i < argc; ++i) { char *v = argv[i]; - while ((*s++ = *v++) != '\0') + while ((*p++ = *v++) != '\0') ; - *(s - 1) = ' '; + *(p - 1) = ' '; } - if (s != value) - *--s = '\0'; + if (p != valp) + *--p = '\0'; - e.flags = EF_DIRTY; - e.name.ram = name; - e.val.ram = value; + e.envvar = value; ep = envlist_enter(&e); if (!ep) { printf_P(PSTR("## Error inserting \"%s\" variable.\n"), name); - return 1; + return CMD_RET_FAILURE; } - return 0; + return CMD_RET_SUCCESS; } /** @@ -710,73 +523,157 @@ static int _do_env_set(int flag, int argc, char * const argv[]) * @param varvalue Value to set it to * @return 0 if ok, 1 on error */ -int setenv(const char *varname, const char *varvalue) +static +int setenv(const MEMX char *varname, const char *varvalue) { - const char * const argv[3] = { NULL, varname, varvalue }; + int rc; + +#ifdef __MEMX + char *tmpname = NULL; + if (__builtin_avr_flash_segment(varname) != -1) { + tmpname = malloc(strlen_P(varname)+1); + if (tmpname == NULL) { + printf_P(PSTR("setenv: Out of Memory!\n")); + return 1; + } + strcpy_P(tmpname, varname); + } else + tmpname = (char *) varname; +#endif + + const char * const argv[3] = { NULL, tmpname, varvalue }; int argc = 3; if (varvalue == NULL || varvalue[0] == '\0') --argc; - - return _do_env_set(0, argc, (char * const *)argv); + + rc = (int) _do_env_set(0, argc, (char * const *)argv); + +#ifdef __MEMX + free(tmpname); +#endif + return rc; } -#if 0 /** * Set an environment variable to an integer value * - * @param varname Environment variable to set - * @param value Value to set it to + * @param name Environment variable to set + * @param value Value to set it to + * @param radix Base * @return 0 if ok, 1 on error */ -int setenv_ulong(const char *varname, unsigned long value) +static +int setenv_intval(const MEMX char *name, unsigned long value, int radix) { - /* TODO: this should be unsigned */ - char *str = simple_itoa(value); + char buf[11]; - return setenv(varname, str); -} -#endif + ultoa(value, buf, radix); + return setenv(name, buf); +} /** - * Set an environment variable to an value in hex + * Set an environment variable to a decimal integer value * - * @param varname Environment variable to set - * @param value Value to set it to + * @param name Environment variable to set + * @param value Value to set it to * @return 0 if ok, 1 on error */ -int setenv_hex(const char *varname, unsigned long value) +int setenv_ulong(const MEMX char *name, unsigned long value) { - char str[sizeof(unsigned long) *2 + 1]; + return setenv_intval(name, value, 10); +} - sprintf_P(str, PSTR("%lx"), value); - return setenv(varname, str); + +/** + * Set an environment variable to a value in hex + * + * @param name Environment variable to set + * @param value Value to set it to + * @return 0 if ok, 1 on error + */ +int setenv_hex(const MEMX char *name, unsigned long value) +{ + return setenv_intval(name, value, 16); } + /** - * Get an environment variable as a hex value + * Decode the integer value of an environment variable and return it. * - * @param varname Environment variable to get - * @param default_val Return this, if variable does not exist - * @return hex value of variable or default_val + * @param name Name of environemnt variable + * @param base Number base to use (normally 10, or 16 for hex) + * @param default_val Default value to return if the variable is not + * found + * @return the decoded value, or default_val if not found */ -unsigned long getenv_hex(const char *varname, unsigned long default_val) +unsigned long getenv_ulong(const MEMX char *name, int base, unsigned long default_val) { - const char *s; unsigned long value; - char *endp; + char *vp, *endp; + + env_item_t *ep = envlist_search(name); + + if (ep != NULL ) { + vp = ep->envvar + strlen(ep->envvar) +1; + value = strtoul(vp, &endp, base); + if (endp != vp) + return value; + } + + return default_val; +} + + +/* + * Read an environment variable as a boolean + */ +bool getenv_yesno(const MEMX char *name) +{ + char *s = getenv_char(name); + + if (s == NULL) + return false; - s = getenv(varname); - if (s) - value = strtoul(s, &endp, 16); - if (!s || endp == s) - return default_val; + return strchr_P(PSTR("1yYtT"), *s) != NULL; - return value; +/* + return *s == '1' || *s == 'y' || *s == 'Y' || *s == 't' || *s == 'T' ? + 1 : 0; +*/ +} + +command_ret_t do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + command_ret_t rc = CMD_RET_SUCCESS; + + (void) cmdtp; (void) flag; + + if (argc == 1) { + /* print all env vars */ + int size = env_print(NULL); + if (size < 0) + return CMD_RET_FAILURE; + printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), + size, ENV_SIZE); + return CMD_RET_SUCCESS; + } + + /* print selected env vars */ + for (int i = 1; i < argc; ++i) { + int rc = env_print(argv[i]); + if (rc < 0) { + printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[i]); + rc = CMD_RET_FAILURE; + } + } + + return rc; } -int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) + +command_ret_t do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { (void) cmdtp; @@ -787,7 +684,34 @@ int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) } -#if defined(CONFIG_AUTO_COMPLETE) +command_ret_t do_env_default(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + (void) cmdtp; (void) flag; (void) argc; (void) argv; + + uint8_t tmp = env_valid; + env_valid = 0; + + /* Reset the whole environment */ + printf_P(PSTR("## Resetting to default environment\n")); + envlist_import(ENVLIST_DELETE); + + env_valid = tmp; + + return CMD_RET_SUCCESS; +} + + +command_ret_t do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + (void) cmdtp; (void) flag; (void) argc; (void) argv; + + printf_P(PSTR("Saving Environment ...\n")); + return saveenv() ? CMD_RET_FAILURE : CMD_RET_SUCCESS; +} + + +#if defined(CONFIG_AUTO_COMPLETE) int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) { ENTRY *match; @@ -818,4 +742,3 @@ int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) return found; } #endif -