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author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot-sam460ex/common/cmd_nvedit.c | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot-sam460ex/common/cmd_nvedit.c')
-rw-r--r-- | roms/u-boot-sam460ex/common/cmd_nvedit.c | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/roms/u-boot-sam460ex/common/cmd_nvedit.c b/roms/u-boot-sam460ex/common/cmd_nvedit.c new file mode 100644 index 000000000..eb89e9e60 --- /dev/null +++ b/roms/u-boot-sam460ex/common/cmd_nvedit.c @@ -0,0 +1,682 @@ +/* + * (C) Copyright 2000-2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Andreas Heppel <aheppel@sysgo.de> + + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/************************************************************************** + * + * Support for persistent environment data + * + * The "environment" is stored as a list of '\0' terminated + * "name=value" strings. The end of the list is marked by a double + * '\0'. New entries are always added at the end. Deleting an entry + * shifts the remaining entries to the front. Replacing an entry is a + * combination of deleting the old value and adding the new one. + * + * The environment is preceeded by a 32 bit CRC over the data part. + * + ************************************************************************** + */ + +#include <common.h> +#include <command.h> +#include <environment.h> +#if defined(CONFIG_CMD_EDITENV) +#include <malloc.h> +#endif +#include <watchdog.h> +#include <serial.h> +#include <linux/stddef.h> +#include <asm/byteorder.h> +#if defined(CONFIG_CMD_NET) +#include <net.h> +#endif + +DECLARE_GLOBAL_DATA_PTR; + +#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ + !defined(CONFIG_ENV_IS_IN_FLASH) && \ + !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ + !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ + !defined(CONFIG_ENV_IS_IN_NAND) && \ + !defined(CONFIG_ENV_IS_IN_NVRAM) && \ + !defined(CONFIG_ENV_IS_IN_ONENAND) && \ + !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ + !defined(CONFIG_ENV_IS_NOWHERE) +# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ +SPI_FLASH|MG_DISK|NVRAM|NOWHERE} +#endif + +#define XMK_STR(x) #x +#define MK_STR(x) XMK_STR(x) + +/************************************************************************ +************************************************************************/ + +/* + * Table with supported baudrates (defined in config_xyz.h) + */ +static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; +#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) + +/* + * This variable is incremented on each do_setenv (), so it can + * be used via get_env_id() as an indication, if the environment + * has changed or not. So it is possible to reread an environment + * variable only if the environment was changed ... done so for + * example in NetInitLoop() + */ +static int env_id = 1; + +int get_env_id (void) +{ + return env_id; +} +/************************************************************************ + * Command interface: print one or all environment variables + */ + +/* + * state 0: finish printing this string and return (matched!) + * state 1: no matching to be done; print everything + * state 2: continue searching for matched name + */ +static int printenv(char *name, int state) +{ + int i, j; + char c, buf[17]; + + i = 0; + buf[16] = '\0'; + + while (state && env_get_char(i) != '\0') { + if (state == 2 && envmatch((uchar *)name, i) >= 0) + state = 0; + + j = 0; + do { + buf[j++] = c = env_get_char(i++); + if (j == sizeof(buf) - 1) { + if (state <= 1) + puts(buf); + j = 0; + } + } while (c != '\0'); + + if (state <= 1) { + if (j) + puts(buf); + putc('\n'); + } + + if (ctrlc()) + return -1; + } + + if (state == 0) + i = 0; + return i; +} + +int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + int i; + int rcode = 0; + + if (argc == 1) { + /* print all env vars */ + rcode = printenv(NULL, 1); + if (rcode < 0) + return 1; + printf("\nEnvironment size: %d/%ld bytes\n", + rcode, (ulong)ENV_SIZE); + return 0; + } + + /* print selected env vars */ + for (i = 1; i < argc; ++i) { + char *name = argv[i]; + if (printenv(name, 2)) { + printf("## Error: \"%s\" not defined\n", name); + ++rcode; + } + } + + return rcode; +} + +/************************************************************************ + * Set a new environment variable, + * or replace or delete an existing one. + * + * This function will ONLY work with a in-RAM copy of the environment + */ + +int _do_setenv (int flag, int argc, char *argv[]) +{ + int i, len, oldval; + int console = -1; + uchar *env, *nxt = NULL; + char *name; + bd_t *bd = gd->bd; + + uchar *env_data = env_get_addr(0); + + if (!env_data) /* need copy in RAM */ + return 1; + + name = argv[1]; + + if (strchr(name, '=')) { + printf ("## Error: illegal character '=' in variable name \"%s\"\n", name); + return 1; + } + + env_id++; + /* + * search if variable with this name already exists + */ + oldval = -1; + for (env=env_data; *env; env=nxt+1) { + for (nxt=env; *nxt; ++nxt) + ; + if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) + break; + } + + /* Check for console redirection */ + if (strcmp(name,"stdin") == 0) { + console = stdin; + } else if (strcmp(name,"stdout") == 0) { + console = stdout; + } else if (strcmp(name,"stderr") == 0) { + console = stderr; + } + + if (console != -1) { + if (argc < 3) { /* Cannot delete it! */ + printf("Can't delete \"%s\"\n", name); + return 1; + } + +#ifdef CONFIG_CONSOLE_MUX + i = iomux_doenv(console, argv[2]); + if (i) + return i; +#else + /* Try assigning specified device */ + if (console_assign (console, argv[2]) < 0) + return 1; + +#ifdef CONFIG_SERIAL_MULTI + if (serial_assign (argv[2]) < 0) + return 1; +#endif +#endif /* CONFIG_CONSOLE_MUX */ + } + + /* + * Delete any existing definition + */ + if (oldval >= 0) { +#ifndef CONFIG_ENV_OVERWRITE + + /* + * Ethernet Address and serial# can be set only once, + * ver is readonly. + */ + if ( +#ifdef CONFIG_HAS_UID + /* Allow serial# forced overwrite with 0xdeaf4add flag */ + ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) || +#else + (strcmp (name, "serial#") == 0) || +#endif + ((strcmp (name, "ethaddr") == 0) +#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) + && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) +#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ + ) ) { + printf ("Can't overwrite \"%s\"\n", name); + return 1; + } +#endif + + /* + * Switch to new baudrate if new baudrate is supported + */ + if (strcmp(argv[1],"baudrate") == 0) { + int baudrate = simple_strtoul(argv[2], NULL, 10); + int i; + for (i=0; i<N_BAUDRATES; ++i) { + if (baudrate == baudrate_table[i]) + break; + } + if (i == N_BAUDRATES) { + printf ("## Baudrate %d bps not supported\n", + baudrate); + return 1; + } + printf ("## Switch baudrate to %d bps and press ENTER ...\n", + baudrate); + udelay(50000); + gd->baudrate = baudrate; +#if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) + gd->bd->bi_baudrate = baudrate; +#endif + + serial_setbrg (); + udelay(50000); + for (;;) { + if (getc() == '\r') + break; + } + } + + if (*++nxt == '\0') { + if (env > env_data) { + env--; + } else { + *env = '\0'; + } + } else { + for (;;) { + *env = *nxt++; + if ((*env == '\0') && (*nxt == '\0')) + break; + ++env; + } + } + *++env = '\0'; + } + + /* Delete only ? */ + if ((argc < 3) || argv[2] == NULL) { + env_crc_update (); + return 0; + } + + /* + * Append new definition at the end + */ + for (env=env_data; *env || *(env+1); ++env) + ; + if (env > env_data) + ++env; + /* + * Overflow when: + * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) + */ + len = strlen(name) + 2; + /* add '=' for first arg, ' ' for all others */ + for (i=2; i<argc; ++i) { + len += strlen(argv[i]) + 1; + } + if (len > (&env_data[ENV_SIZE]-env)) { + printf ("## Error: environment overflow, \"%s\" deleted\n", name); + return 1; + } + while ((*env = *name++) != '\0') + env++; + for (i=2; i<argc; ++i) { + char *val = argv[i]; + + *env = (i==2) ? '=' : ' '; + while ((*++env = *val++) != '\0') + ; + } + + /* end is marked with double '\0' */ + *++env = '\0'; + + /* Update CRC */ + env_crc_update (); + + /* + * Some variables should be updated when the corresponding + * entry in the enviornment is changed + */ + + if (strcmp(argv[1],"ethaddr") == 0) + return 0; + + if (strcmp(argv[1],"ipaddr") == 0) { + char *s = argv[2]; /* always use only one arg */ + char *e; + unsigned long addr; + bd->bi_ip_addr = 0; + for (addr=0, i=0; i<4; ++i) { + ulong val = s ? simple_strtoul(s, &e, 10) : 0; + addr <<= 8; + addr |= (val & 0xFF); + if (s) s = (*e) ? e+1 : e; + } + bd->bi_ip_addr = htonl(addr); + return 0; + } + if (strcmp(argv[1],"loadaddr") == 0) { + load_addr = simple_strtoul(argv[2], NULL, 16); + return 0; + } +#if defined(CONFIG_CMD_NET) + if (strcmp(argv[1],"bootfile") == 0) { + copy_filename (BootFile, argv[2], sizeof(BootFile)); + return 0; + } +#endif + +#ifdef CONFIG_AMIGAONEG3SE + if (strcmp(argv[1], "vga_fg_color") == 0 || + strcmp(argv[1], "vga_bg_color") == 0 ) { + extern void video_set_color(unsigned char attr); + extern unsigned char video_get_attr(void); + + video_set_color(video_get_attr()); + return 0; + } +#endif /* CONFIG_AMIGAONEG3SE */ + + return 0; +} + +int setenv (char *varname, char *varvalue) +{ + char *argv[4] = { "setenv", varname, varvalue, NULL }; + if ((varvalue == NULL) || (varvalue[0] == '\0')) + return _do_setenv (0, 2, argv); + else + return _do_setenv (0, 3, argv); +} + +#ifdef CONFIG_HAS_UID +void forceenv (char *varname, char *varvalue) +{ + char *argv[4] = { "forceenv", varname, varvalue, NULL }; + _do_setenv (0xdeaf4add, 3, argv); +} +#endif + +int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + if (argc < 2) { + cmd_usage(cmdtp); + return 1; + } + + return _do_setenv (flag, argc, argv); +} + +/************************************************************************ + * Prompt for environment variable + */ + +#if defined(CONFIG_CMD_ASKENV) +int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + extern char console_buffer[CONFIG_SYS_CBSIZE]; + char message[CONFIG_SYS_CBSIZE]; + int size = CONFIG_SYS_CBSIZE - 1; + int len; + char *local_args[4]; + + local_args[0] = argv[0]; + local_args[1] = argv[1]; + local_args[2] = NULL; + local_args[3] = NULL; + + if (argc < 2) { + cmd_usage(cmdtp); + return 1; + } + /* Check the syntax */ + switch (argc) { + case 1: + cmd_usage(cmdtp); + return 1; + + case 2: /* askenv envname */ + sprintf (message, "Please enter '%s':", argv[1]); + break; + + case 3: /* askenv envname size */ + sprintf (message, "Please enter '%s':", argv[1]); + size = simple_strtoul (argv[2], NULL, 10); + break; + + default: /* askenv envname message1 ... messagen size */ + { + int i; + int pos = 0; + + for (i = 2; i < argc - 1; i++) { + if (pos) { + message[pos++] = ' '; + } + strcpy (message+pos, argv[i]); + pos += strlen(argv[i]); + } + message[pos] = '\0'; + size = simple_strtoul (argv[argc - 1], NULL, 10); + } + break; + } + + if (size >= CONFIG_SYS_CBSIZE) + size = CONFIG_SYS_CBSIZE - 1; + + if (size <= 0) + return 1; + + /* prompt for input */ + len = readline (message); + + if (size < len) + console_buffer[size] = '\0'; + + len = 2; + if (console_buffer[0] != '\0') { + local_args[2] = console_buffer; + len = 3; + } + + /* Continue calling setenv code */ + return _do_setenv (flag, len, local_args); +} +#endif + +/************************************************************************ + * Interactively edit an environment variable + */ +#if defined(CONFIG_CMD_EDITENV) +int do_editenv(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + char buffer[CONFIG_SYS_CBSIZE]; + char *init_val; + int len; + + if (argc < 2) { + cmd_usage(cmdtp); + return 1; + } + + /* Set read buffer to initial value or empty sting */ + init_val = getenv(argv[1]); + if (init_val) + len = sprintf(buffer, "%s", init_val); + else + buffer[0] = '\0'; + + readline_into_buffer("edit: ", buffer); + + return setenv(argv[1], buffer); +} +#endif /* CONFIG_CMD_EDITENV */ + +/************************************************************************ + * Look up variable from environment, + * return address of storage for that variable, + * or NULL if not found + */ + +char *getenv (char *name) +{ + int i, nxt; + + WATCHDOG_RESET(); + + for (i=0; env_get_char(i) != '\0'; i=nxt+1) { + int val; + + for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { + if (nxt >= CONFIG_ENV_SIZE) { + return (NULL); + } + } + if ((val=envmatch((uchar *)name, i)) < 0) + continue; + return ((char *)env_get_addr(val)); + } + + return (NULL); +} + +int getenv_r (char *name, char *buf, unsigned len) +{ + int i, nxt; + + for (i=0; env_get_char(i) != '\0'; i=nxt+1) { + int val, n; + + for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { + if (nxt >= CONFIG_ENV_SIZE) { + return (-1); + } + } + if ((val=envmatch((uchar *)name, i)) < 0) + continue; + /* found; copy out */ + n = 0; + while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0') + ; + if (len == n) + *buf = '\0'; + return (n); + } + return (-1); +} + +#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) + +int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + extern char * env_name_spec; + + printf ("Saving Environment to %s...\n", env_name_spec); + + return (saveenv() ? 1 : 0); +} + +U_BOOT_CMD( + saveenv, 1, 0, do_saveenv, + "save environment variables to persistent storage", + "" +); + +#endif + + +/************************************************************************ + * Match a name / name=value pair + * + * s1 is either a simple 'name', or a 'name=value' pair. + * i2 is the environment index for a 'name2=value2' pair. + * If the names match, return the index for the value2, else NULL. + */ + +int envmatch (uchar *s1, int i2) +{ + + while (*s1 == env_get_char(i2++)) + if (*s1++ == '=') + return(i2); + if (*s1 == '\0' && env_get_char(i2-1) == '=') + return(i2); + return(-1); +} + + +/**************************************************/ + +#if defined(CONFIG_CMD_EDITENV) +U_BOOT_CMD( + editenv, 2, 0, do_editenv, + "edit environment variable", + "name\n" + " - edit environment variable 'name'" +); +#endif + +U_BOOT_CMD( + printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, + "print environment variables", + "\n - print values of all environment variables\n" + "printenv name ...\n" + " - print value of environment variable 'name'" +); + +U_BOOT_CMD( + setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, + "set environment variables", + "name value ...\n" + " - set environment variable 'name' to 'value ...'\n" + "setenv name\n" + " - delete environment variable 'name'" +); + +#if defined(CONFIG_CMD_ASKENV) + +U_BOOT_CMD( + askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, + "get environment variables from stdin", + "name [message] [size]\n" + " - get environment variable 'name' from stdin (max 'size' chars)\n" + "askenv name\n" + " - get environment variable 'name' from stdin\n" + "askenv name size\n" + " - get environment variable 'name' from stdin (max 'size' chars)\n" + "askenv name [message] size\n" + " - display 'message' string and get environment variable 'name'" + "from stdin (max 'size' chars)" +); +#endif + +#if defined(CONFIG_CMD_RUN) +int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); +U_BOOT_CMD( + run, CONFIG_SYS_MAXARGS, 1, do_run, + "run commands in an environment variable", + "var [...]\n" + " - run the commands in the environment variable(s) 'var'" +); +#endif |