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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2025-08-04 11:21:37 +0200 |
|---|---|---|
| committer | Michael Trimarchi <michael@amarulasolutions.com> | 2025-08-23 16:37:22 +0200 |
| commit | d246e70cf81d0a0d7cc49abd520c93df59d42e16 (patch) | |
| tree | e1c287aa1ab2569f979f46a6a7e280cdada8a6d3 | |
| parent | bb5d3a7a1c83cca588b5795630bf8fb3db950e5e (diff) | |
cmd: mtd: Enable speed benchmarking
Linux features a flash_speed speed test from the mtd-utils suite, U-Boot
does not. Benchmarks are useful for speed improvement developments as
well as troubleshooting or regression testing sometimes.
Enable a benchmark option to enable this feature.
Example of output on a Nuvoton platform:
MA35D1> mtd read nor0 0x81000000 0 0x10000
Reading 65536 byte(s) at offset 0x00000000
MA35D1> mtd read.benchmark nor0 0x81000000 0 0x10000
Reading 65536 byte(s) at offset 0x00000000
Read speed: 3752kiB/s
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
| -rw-r--r-- | cmd/mtd.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/cmd/mtd.c b/cmd/mtd.c index c25997cfb24..2520b89eed2 100644 --- a/cmd/mtd.c +++ b/cmd/mtd.c @@ -17,6 +17,7 @@ #include <malloc.h> #include <mapmem.h> #include <mtd.h> +#include <time.h> #include <dm/devres.h> #include <linux/err.h> @@ -466,8 +467,9 @@ static int mtd_special_write_oob(struct mtd_info *mtd, u64 off, static int do_mtd_io(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { - bool dump, read, raw, woob, write_empty_pages, has_pages = false; + bool dump, read, raw, woob, benchmark, write_empty_pages, has_pages = false; u64 start_off, off, len, remaining, default_len; + unsigned long bench_start, bench_end; struct mtd_oob_ops io_op = {}; uint user_addr = 0, npages; const char *cmd = argv[0]; @@ -490,6 +492,7 @@ static int do_mtd_io(struct cmd_tbl *cmdtp, int flag, int argc, read = dump || !strncmp(cmd, "read", 4); raw = strstr(cmd, ".raw"); woob = strstr(cmd, ".oob"); + benchmark = strstr(cmd, ".benchmark"); write_empty_pages = !has_pages || strstr(cmd, ".dontskipff"); argc -= 2; @@ -559,6 +562,9 @@ static int do_mtd_io(struct cmd_tbl *cmdtp, int flag, int argc, led_activity_blink(); + if (benchmark) + bench_start = timer_get_us(); + /* Loop over the pages to do the actual read/write */ while (remaining) { /* Skip the block if it is bad */ @@ -586,6 +592,13 @@ static int do_mtd_io(struct cmd_tbl *cmdtp, int flag, int argc, io_op.oobbuf += io_op.oobretlen; } + if (benchmark && bench_start) { + bench_end = timer_get_us(); + printf("%s speed: %lukiB/s\n", + read ? "Read" : "Write", + ((io_op.len * 1000000) / (bench_end - bench_start)) / 1024); + } + led_activity_off(); if (!ret && dump) |