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uboot-mediatek: add command for getting size of ram
Add command which gets ramsize and write it to env variable. Signed-off-by: Frank Wunderlich <frank-w@public-files.de> Link: https://github.com/openwrt/openwrt/pull/21437 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Frank Wunderlich
Hauke Mehrtens
parent
02b2dd3508
commit
46ee5209aa
2 changed files with 121 additions and 0 deletions
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@ -75,6 +75,7 @@
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_MEMSIZE=y
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+CONFIG_OF_EMBED=y
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+CONFIG_OF_EMBED=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_IS_IN_MMC=y
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+CONFIG_ENV_IS_IN_MMC=y
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@ -356,6 +357,7 @@
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_MEMSIZE=y
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+CONFIG_OF_EMBED=y
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+CONFIG_OF_EMBED=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_IS_IN_UBI=y
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+CONFIG_ENV_IS_IN_UBI=y
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@ -948,6 +950,7 @@
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_MEMSIZE=y
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+CONFIG_OF_EMBED=y
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+CONFIG_OF_EMBED=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_IS_IN_MMC=y
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+CONFIG_ENV_IS_IN_MMC=y
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@ -1229,6 +1232,7 @@
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_FS_UUID=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_UBI_RENAME=y
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+CONFIG_CMD_MEMSIZE=y
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+CONFIG_OF_EMBED=y
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+CONFIG_OF_EMBED=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_OVERWRITE=y
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+CONFIG_ENV_IS_IN_UBI=y
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+CONFIG_ENV_IS_IN_UBI=y
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117
package/boot/uboot-mediatek/patches/501-add-cmd-msize.patch
Normal file
117
package/boot/uboot-mediatek/patches/501-add-cmd-msize.patch
Normal file
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@ -0,0 +1,117 @@
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From 83c596f12349fdc77fa76e1d017b4fc8882744ef Mon Sep 17 00:00:00 2001
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From: Frank Wunderlich <frank-w@public-files.de>
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Date: Sat, 17 Jan 2026 12:38:40 +0100
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To: Tom Rini <trini@konsulko.com>
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Cc: u-boot@lists.denx.de,
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Daniel Golle <daniel@makrotopia.org>
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Subject: [PATCH v4] cmd: mem: add function for getting ram size for use in
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scripts
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Add a command for getting detected ram size with possibility to write
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to environment variable.
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example usage:
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BPI-R4> msize
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4294967296
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BPI-R4> msize m
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4096m
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BPI-R4> msize g
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4g
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BPI-R4> msize g ramsize
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BPI-R4> printenv ramsize
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ramsize=4
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BPI-R4>
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board with 8GB ram:
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BPI-R4> msize
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8589934592
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BPI-R4> msize m
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8192m
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BPI-R4> msize g
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8g
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BPI-R4> msize g ramsize
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BPI-R4> printenv ramsize
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ramsize=8
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BPI-R4>
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Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
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---
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v4: drop rounding to full MB/GB as it leads to wrong display
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v3: add missing ifdefs
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v2: add Kconfig entry
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---
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cmd/Kconfig | 5 +++++
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cmd/mem.c | 32 ++++++++++++++++++++++++++++++++
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2 files changed, 37 insertions(+)
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--- a/cmd/Kconfig
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+++ b/cmd/Kconfig
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@@ -980,6 +980,11 @@ config CMD_RANDOM
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help
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random - fill memory with random data
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+config CMD_MEMSIZE
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+ bool "memsize"
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+ help
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+ Get RAM via command for use in scripts.
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+
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config CMD_MEMTEST
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bool "memtest"
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help
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--- a/cmd/mem.c
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+++ b/cmd/mem.c
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@@ -33,6 +33,7 @@
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#include <linux/compiler.h>
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#include <linux/ctype.h>
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#include <linux/delay.h>
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+#include <linux/sizes.h>
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DECLARE_GLOBAL_DATA_PTR;
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@@ -711,6 +712,29 @@ static int do_mem_loopw(struct cmd_tbl *
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}
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#endif /* CONFIG_LOOPW */
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+#ifdef CONFIG_CMD_MEMSIZE
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+static int do_mem_size(struct cmd_tbl *cmdtp, int flag, int argc,
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+ char *const argv[])
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+{
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+ u64 memsize = gd->ram_size;
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+
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+ if (argc > 1) {
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+ if (!strcmp(argv[1], "m"))
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+ memsize = memsize / SZ_1M;
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+ else if (!strcmp(argv[1], "g"))
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+ memsize = memsize / SZ_1G;
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+ if (argc > 2)
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+ env_set_ulong(argv[2], memsize);
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+ else
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+ printf("%lld%s\n", memsize, argv[1]);
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+ } else {
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+ printf("%lld\n", memsize);
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+ }
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+
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+ return 0;
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+}
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+#endif /* CONFIG_CMD_MEMSIZE */
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+
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#ifdef CONFIG_CMD_MEMTEST
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static ulong mem_test_alt(volatile ulong *buf, ulong start_addr, ulong end_addr,
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volatile ulong *dummy)
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@@ -1404,6 +1428,14 @@ U_BOOT_CMD(
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);
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#endif /* CONFIG_LOOPW */
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+#ifdef CONFIG_CMD_MEMSIZE
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+U_BOOT_CMD(
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+ msize, 3, 1, do_mem_size,
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+ "get detected ram size, optional set env variable with value",
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+ "[m, g] [envvar]"
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+);
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+#endif /* CONFIG_CMD_MEMSIZE */
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+
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#ifdef CONFIG_CMD_MEMTEST
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U_BOOT_CMD(
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mtest, 5, 1, do_mem_mtest,
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