[PATCH v2 1/2] cmd: fdt: Fix iteration over elements above index 1 in fdt get
Always increment both the iterator and pointer into the string property value by length of the current element + 1 (to cater for the string delimiter), otherwise the element extracted from the string property value would be extracted from an offset that is multiple of the length of the first element, instead of sum of element lengths until select index.
This fixes 'fdt get value' operation for index above 1 (counting from index 0).
Acked-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com Fixes: 13982ced2cc ("cmd: fdt: Add support for reading stringlist property values") Signed-off-by: Marek Vasut marex@denx.de --- Cc: Heinrich Schuchardt heinrich.schuchardt@canonical.com Cc: Simon Glass sjg@chromium.org Cc: Tom Rini trini@konsulko.com --- V2: - Update commit message, use index above 1 and clarify the counting is zero-based - Add AB from Heinrich --- cmd/fdt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/cmd/fdt.c b/cmd/fdt.c index 4b2dcfec863..8e51a431261 100644 --- a/cmd/fdt.c +++ b/cmd/fdt.c @@ -60,11 +60,14 @@ static int fdt_value_env_set(const void *nodep, int len, * Iterate over all members in stringlist and find the one at * offset $index. If no such index exists, indicate failure. */ - for (i = 0; i < len; i += strlen(nodec) + 1) { - if (index-- > 0) + for (i = 0; i < len; ) { + if (index-- > 0) { + i += strlen(nodec) + 1; + nodec += strlen(nodec) + 1; continue; + }
- env_set(var, nodec + i); + env_set(var, nodec); return 0; }
Add test case for 'fdt get value' sub command.
The test case can be triggered using: " ./u-boot -d u-boot.dtb -c 'ut fdt' "
Acked-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com Signed-off-by: Marek Vasut marex@denx.de --- Cc: Heinrich Schuchardt heinrich.schuchardt@canonical.com Cc: Simon Glass sjg@chromium.org Cc: Tom Rini trini@konsulko.com --- V2: - Add AB from Heinrich --- test/cmd/fdt.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)
diff --git a/test/cmd/fdt.c b/test/cmd/fdt.c index ba9eaa42c14..7974c88c0d6 100644 --- a/test/cmd/fdt.c +++ b/test/cmd/fdt.c @@ -142,6 +142,59 @@ static int fdt_test_resize(struct unit_test_state *uts) } FDT_TEST(fdt_test_resize, UT_TESTF_CONSOLE_REC);
+/* Test 'fdt get' reading an fdt */ +static int fdt_test_get(struct unit_test_state *uts) +{ + ulong addr; + + addr = map_to_sysmem(gd->fdt_blob); + set_working_fdt_addr(addr); + + /* Test getting default element of /clk-test node clock-names property */ + ut_assertok(console_record_reset_enable()); + ut_assertok(run_command("fdt get value fdflt /clk-test clock-names", 0)); + ut_asserteq_str("fixed", env_get("fdflt")); + ut_assertok(ut_check_console_end(uts)); + + /* Test getting 0th element of /clk-test node clock-names property */ + ut_assertok(console_record_reset_enable()); + ut_assertok(run_command("fdt get value fzero /clk-test clock-names 0", 0)); + ut_asserteq_str("fixed", env_get("fzero")); + ut_assertok(ut_check_console_end(uts)); + + /* Test getting 1st element of /clk-test node clock-names property */ + ut_assertok(console_record_reset_enable()); + ut_assertok(run_command("fdt get value fone /clk-test clock-names 1", 0)); + ut_asserteq_str("i2c", env_get("fone")); + ut_assertok(ut_check_console_end(uts)); + + /* Test getting 2nd element of /clk-test node clock-names property */ + ut_assertok(console_record_reset_enable()); + ut_assertok(run_command("fdt get value ftwo /clk-test clock-names 2", 0)); + ut_asserteq_str("spi", env_get("ftwo")); + ut_assertok(ut_check_console_end(uts)); + + /* Test missing 10th element of /clk-test node clock-names property */ + ut_assertok(console_record_reset_enable()); + ut_asserteq(1, run_command("fdt get value ftwo /clk-test clock-names 10", 0)); + ut_assertok(ut_check_console_end(uts)); + + /* Test getting default element of /clk-test node nonexistent property */ + ut_assertok(console_record_reset_enable()); + ut_asserteq(1, run_command("fdt get value fnone /clk-test nonexistent", 1)); + ut_assert_nextline("libfdt fdt_getprop(): FDT_ERR_NOTFOUND"); + ut_assertok(ut_check_console_end(uts)); + + /* Test getting default element of /nonexistent node */ + ut_assertok(console_record_reset_enable()); + ut_asserteq(1, run_command("fdt get value fnode /nonexistent nonexistent", 1)); + ut_assert_nextline("libfdt fdt_path_offset() returned FDT_ERR_NOTFOUND"); + ut_assertok(ut_check_console_end(uts)); + + return 0; +} +FDT_TEST(fdt_test_get, UT_TESTF_CONSOLE_REC); + int do_ut_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct unit_test *tests = UNIT_TEST_SUITE_START(fdt_test);
Add test case for 'fdt get value' sub command.
The test case can be triggered using: " ./u-boot -d u-boot.dtb -c 'ut fdt' "
Acked-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com Signed-off-by: Marek Vasut marex@denx.de --- Cc: Heinrich Schuchardt heinrich.schuchardt@canonical.com Cc: Simon Glass sjg@chromium.org Cc: Tom Rini trini@konsulko.com --- V2: - Add AB from Heinrich --- test/cmd/fdt.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)
Applied to u-boot-dm, thanks!
Always increment both the iterator and pointer into the string property value by length of the current element + 1 (to cater for the string delimiter), otherwise the element extracted from the string property value would be extracted from an offset that is multiple of the length of the first element, instead of sum of element lengths until select index.
This fixes 'fdt get value' operation for index above 1 (counting from index 0).
Acked-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com Fixes: 13982ced2cc ("cmd: fdt: Add support for reading stringlist property values") Signed-off-by: Marek Vasut marex@denx.de --- Cc: Heinrich Schuchardt heinrich.schuchardt@canonical.com Cc: Simon Glass sjg@chromium.org Cc: Tom Rini trini@konsulko.com --- V2: - Update commit message, use index above 1 and clarify the counting is zero-based - Add AB from Heinrich --- cmd/fdt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
Applied to u-boot-dm, thanks!
participants (2)
-
Marek Vasut -
Simon Glass