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authorKim Phillips <kim.phillips@freescale.com>2011-04-05 07:15:14 +0000
committerWolfgang Denk <wd@denx.de>2011-04-28 01:00:07 +0200
commita000b7950da938d2df37ec5e081cd0680e6e4bbe (patch)
treed0afd3566d3ca74118d8d06d52625d9ae66b4378 /common/cmd_nvedit.c
parent1fade70203668a62c4024246c23450817f5753be (diff)
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common: add a grepenv command
u-boot environments, esp. when boards are shared across multiple users, can get pretty large and time consuming to visually parse. The grepenv command this patch adds can be used in lieu of printenv to facilitate searching. grepenv works like printenv but limits its output only to environment strings (variable name and value pairs) that match the user specified substring. the following examples are on a board with a 5313 byte environment that spans multiple screen pages: Example 1: summarize ethernet configuration: => grepenv eth TSEC etact=FM1@DTSEC2 eth=FM1@DTSEC4 ethact=FM1@DTSEC2 eth1addr=00:E0:0C:00:8b:01 eth2addr=00:E0:0C:00:8b:02 eth3addr=00:E0:0C:00:8b:03 eth4addr=00:E0:0C:00:8b:04 eth5addr=00:E0:0C:00:8b:05 eth6addr=00:E0:0C:00:8b:06 eth7addr=00:E0:0C:00:8b:07 eth8addr=00:E0:0C:00:8b:08 eth9addr=00:E0:0C:00:8b:09 ethaddr=00:E0:0C:00:8b:00 netdev=eth0 uprcw=setenv ethact $eth;setenv filename p4080ds/R_PPSXX_0xe/rcw_0xe_2sgmii_rev2_high.bin;setenv start 0xe8000000;protect off all;run upimage;protect on all upuboot=setenv ethact $eth;setenv filename u-boot.bin;setenv start eff80000;protect off all;run upimage;protect on all upucode=setenv ethact $eth;setenv filename fsl_fman_ucode_P4080_101_6.bin;setenv start 0xef000000;protect off all;run upimage;protect on all usdboot=setenv ethact $eth;tftp 1000000 $dir/$bootfile;tftp 2000000 $dir/initramfs.cpio.gz.uboot;tftp c00000 $dir/p4080ds-usdpaa.dtb;setenv bootargs root=/dev/ram rw console=ttyS0,115200 $othbootargs;bootm 1000000 2000000 c00000; => Example 2: detect unused env vars: => grepenv etact etact=FM1@DTSEC2 => Example 3: reveal hardcoded variables; e.g., for fdtaddr: => grepenv fdtaddr fdtaddr=c00000 nfsboot=setenv bootargs root=/dev/nfs rw nfsroot=$serverip:$rootpath ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname:$netdev:off console=$consoledev,$baudrate $othbootargs;tftp $loadaddr $bootfile;tftp $fdtaddr $fdtfile;bootm $loadaddr - $fdtaddr ramboot=setenv bootargs root=/dev/ram rw console=$consoledev,$baudrate $othbootargs;tftp $ramdiskaddr $ramdiskfile;tftp $loadaddr $bootfile;tftp $fdtaddr $fdtfile;bootm $loadaddr $ramdiskaddr $fdtaddr => grep $fdtaddr fdtaddr=c00000 my_boot=bootm 0x40000000 0x41000000 0x00c00000 my_dtb=tftp 0x00c00000 $prefix/p4080ds.dtb nohvboot=tftp 1000000 $dir/$bootfile;tftp 2000000 $dir/$ramdiskfile;tftp c00000 $dir/$fdtfile;setenv bootargs root=/dev/ram rw ramdisk_size=0x10000000 console=ttyS0,115200;bootm 1000000 2000000 c00000; => This patch also enables the grepenv command by default on corenet_ds based boards (and repositions the DHCP command entry to keep the list sorted). Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Cc: Kumar Gala <kumar.gala@freescale.com> Cc: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'common/cmd_nvedit.c')
-rw-r--r--common/cmd_nvedit.c55
1 files changed, 52 insertions, 3 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index df0e6db..817f39b 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -4,7 +4,9 @@
*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
-
+ *
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ *
* See file CREDITS for list of people who contributed to this
* project.
*
@@ -160,6 +162,37 @@ int do_env_print (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return rcode;
}
+#ifdef CONFIG_CMD_GREPENV
+static int do_env_grep (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ ENTRY *match;
+ unsigned char matched[env_htab.size / 8];
+ int rcode = 1, arg = 1, idx;
+
+ if (argc < 2)
+ return cmd_usage(cmdtp);
+
+ memset(matched, 0, env_htab.size / 8);
+
+ while (arg <= argc) {
+ idx = 0;
+ while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) {
+ if (!(matched[idx / 8] & (1 << (idx & 7)))) {
+ puts(match->key);
+ puts("=");
+ puts(match->data);
+ puts("\n");
+ }
+ matched[idx / 8] |= 1 << (idx & 7);
+ rcode = 0;
+ }
+ arg++;
+ }
+
+ return rcode;
+}
+#endif
+
/*
* Set a new environment variable,
* or replace or delete an existing one.
@@ -829,6 +862,9 @@ static cmd_tbl_t cmd_env_sub[] = {
#if defined(CONFIG_CMD_EXPORTENV)
U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
#endif
+#if defined(CONFIG_CMD_GREPENV)
+ U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
+#endif
#if defined(CONFIG_CMD_IMPORTENV)
U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
#endif
@@ -878,8 +914,11 @@ U_BOOT_CMD(
#if defined(CONFIG_CMD_EDITENV)
"env edit name - edit environment variable\n"
#endif
- "env export [-t | -b | -c] addr [size] - export environmnt\n"
- "env import [-d] [-t | -b | -c] addr [size] - import environmnt\n"
+ "env export [-t | -b | -c] addr [size] - export environment\n"
+#if defined(CONFIG_CMD_GREPENV)
+ "env grep string [...] - search environment\n"
+#endif
+ "env import [-d] [-t | -b | -c] addr [size] - import environment\n"
"env print [name ...] - print environment\n"
#if defined(CONFIG_CMD_RUN)
"env run var [...] - run commands in an environment variable\n"
@@ -911,6 +950,16 @@ U_BOOT_CMD_COMPLETE(
var_complete
);
+#ifdef CONFIG_CMD_GREPENV
+U_BOOT_CMD_COMPLETE(
+ grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
+ "search environment variables",
+ "string ...\n"
+ " - list environment name=value pairs matching 'string'",
+ var_complete
+);
+#endif
+
U_BOOT_CMD_COMPLETE(
setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
"set environment variables",