The printf() in panic() adds about 1.5KB of code size to SPL when compiled with Thumb-2. Provide a smaller version that does not support printf()-style arguments and use it in two commonly compiled places.
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/serial/serial-uclass.c | 2 +- include/vsprintf.h | 23 +++++++++++++++++++++++ lib/fdtdec.c | 8 +++++--- lib/vsprintf.c | 23 ++++++++++++++++++----- 4 files changed, 47 insertions(+), 9 deletions(-)
diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index 3fc7104..13ba606 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -72,7 +72,7 @@ static void serial_find_console_or_panic(void) if (uclass_get_device_by_seq(UCLASS_SERIAL, INDEX, &dev) && uclass_get_device(UCLASS_SERIAL, INDEX, &dev) && (uclass_first_device(UCLASS_SERIAL, &dev) || !dev)) - panic("No serial driver found"); + panic_str("No serial driver found"); #undef INDEX gd->cur_serial_dev = dev; } diff --git a/include/vsprintf.h b/include/vsprintf.h index 5624482..09c8abd 100644 --- a/include/vsprintf.h +++ b/include/vsprintf.h @@ -39,10 +39,33 @@ int strict_strtoul(const char *cp, unsigned int base, unsigned long *res); unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base); long simple_strtol(const char *cp, char **endp, unsigned int base); + +/** + * panic() - Print a message and reset/hang + * + * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is + * defined, then it will hang instead of reseting. + * + * @param fmt: printf() format string for message, which should not include + * \n, followed by arguments + */ void panic(const char *fmt, ...) __attribute__ ((format (__printf__, 1, 2), noreturn));
/** + * panic_str() - Print a message and reset/hang + * + * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is + * defined, then it will hang instead of reseting. + * + * This function can be used instead of panic() when your board does not + * already use printf(), * to keep code size small. + * + * @param fmt: string to display, which should not include \n + */ +void panic_str(const char *str) __attribute__ ((noreturn)); + +/** * Format a string and place it in a buffer * * @param buf The buffer to place the result into diff --git a/lib/fdtdec.c b/lib/fdtdec.c index dd58bbb..cc5ba20 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -564,9 +564,11 @@ int fdtdec_prepare_fdt(void) { if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || fdt_check_header(gd->fdt_blob)) { - printf("No valid FDT found - please append one to U-Boot " - "binary, use u-boot-dtb.bin or define " - "CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n"); +#ifdef CONFIG_SPL_BUILD + puts("Missing DTB\n"); +#else + puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n"); +#endif return -1; } return 0; diff --git a/lib/vsprintf.c b/lib/vsprintf.c index e0f2648..bedc865 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -842,13 +842,11 @@ int sprintf(char *buf, const char *fmt, ...) return i; }
-void panic(const char *fmt, ...) +static void panic_finish(void) __attribute__ ((noreturn)); + +static void panic_finish(void) { - va_list args; - va_start(args, fmt); - vprintf(fmt, args); putc('\n'); - va_end(args); #if defined(CONFIG_PANIC_HANG) hang(); #else @@ -859,6 +857,21 @@ void panic(const char *fmt, ...) ; }
+void panic_str(const char *str) +{ + puts(str); + panic_finish(); +} + +void panic(const char *fmt, ...) +{ + va_list args; + va_start(args, fmt); + vprintf(fmt, args); + va_end(args); + panic_finish(); +} + void __assert_fail(const char *assertion, const char *file, unsigned line, const char *function) {