summaryrefslogtreecommitdiffstats
path: root/lib/tiny-printf.c
Commit message (Collapse)AuthorAgeFilesLines
* tiny-printf: Add support for %p formatVignesh R2017-04-131-0/+154
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for %p, %pa[p], %pM, %pm and %pI4 formats to tiny-printf. %pM and %pI4 are widely used by SPL networking stack and is required if networking support is desired in SPL. %p, %pa and %pap are mostly used by debug prints and hence supported only when DEBUG is enabled. Before this patch: $ size spl/u-boot-spl text data bss dec hex filename 99325 4899 218584 322808 4ecf8 spl/u-boot-spl After this patch (with CONFIG_SPL_NET_SUPPORT): $ size spl/u-boot-spl text data bss dec hex filename 99666 4899 218584 323149 4ee4d spl/u-boot-spl So, this patch adds ~350 bytes to code size. If CONFIG_SPL_NET_SUPPORT is not enabled, this adds ~25 bytes. If CONFIG_USE_TINY_PRINTF is disabled then: $ size spl/u-boot-spl text data bss dec hex filename 101116 4899 218584 324599 4f3f7 spl/u-boot-spl So, there is still ~1.4K space saved even with support for %pM/%pI4. Compiler used is to build is: arm-linux-gnueabihf-gcc (Linaro GCC 6.2-2016.11) 6.2.1 20161016 Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* tiny-printf: add static to locally used functionsMasahiro Yamada2017-03-141-2/+2
| | | | | | | | These two functions are only used in lib/tiny-printf.c . Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Stefan Roese <sr@denx.de>
* SPL: tiny-printf: ignore "-" modifierAndre Przywara2017-01-041-0/+3
| | | | | | | | | | tiny-printf does not know about the "-" modifier, which aligns numbers. This is used by some SPL code, but as it's purely cosmetical, we just ignore this modifier here to avoid changing correct printf strings. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com>
* SPL: tiny-printf: add "l" modifierAndre Przywara2017-01-041-11/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | tiny-printf does not know about the "l" modifier so far, which breaks the crash dump on AArch64, because it uses %lx to print the registers. Add an easy way of handling longs correctly. Using a relatively decent compiler (GCC 5.3.0) this does _not_ increase the code size of tiny-printf.o for 32-bit builds (where long and int are actually the same), actually it looses three (ARM Thumb2) instructions from the actual SPL (numbers for orangepi_plus_defconfig): text data bss dec hex filename 758 0 0 758 2f6 spl/lib/tiny-printf.o before 18839 488 232 19559 4c67 spl/u-boot-spl before 758 0 0 758 2f6 spl/lib/tiny-printf.o after 18833 488 232 19553 4c61 spl/u-boot-spl after This adds some substantial amount of code to a 64-bit build, though: (taken after a later commit, which enables the ARM64 SPL build for sunxi) text data bss dec hex filename 1542 0 0 1542 606 spl/lib/tiny-printf.o before 25830 392 360 26582 67d6 spl/u-boot-spl before 1758 0 0 1758 6de spl/lib/tiny-printf.o after 26040 392 360 26792 68a8 spl/u-boot-spl after Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com>
* tiny-printf: Adjust to avoid using data sectionSimon Glass2016-08-081-44/+58
| | | | | | | | | | | | | | | | | We can pass all the variables down to the functions that need them, and then everything is on the stack. This is safer than using the data section. At least on firefly-rk3288, the code size is the same and the data size is 12 bytes smaller: before: 18865 2636 40 21541 5425 b/firefly-rk3288/spl/u-boot-spl after: 18865 2624 40 21529 5419 b/firefly-rk3288/spl/u-boot-spl Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Stefan Roese <sr@denx.de>
* tiny-printf: Support assert()Simon Glass2016-07-141-0/+9
| | | | | | | | | | At present assert() is not supported with tiny-printf, so when DEBUG is enabled a build error is generated for each assert(). Add an __assert_fail() function to correct this. It prints a message and then hangs. Signed-off-by: Simon Glass <sjg@chromium.org>
* SPL: tiny-printf: avoid any BSS usageAndre Przywara2016-07-081-3/+8
| | | | | | | | | | As printf calls may be executed quite early, we should avoid using any BSS stored variables, since some boards put BSS in DRAM, which may not have been initialised yet. Explicitly mark those "static global" variables as belonging to the .data section, to keep tiny-printf clear of any BSS usage. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
* tinyprintf: Add vprintf implementationHans de Goede2016-06-201-0/+5
| | | | | | | | | vprintf is used by panic() which is used in various SPL paths on some boards. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Reviewed-by: Simon Glass <sjg@chromium.org>
* tiny-printf: Correct the snprintf() implementationSimon Glass2016-06-091-1/+3
| | | | | | | | | | | | This current code passes the variable arguments list to sprintf(). This is not correct. Fix it by calling _vprintf() directly. This makes firefly-rk3288 boot again. Fixes: abeb272 ("tiny-printf: Support snprintf()") Reviewed-by: Stefan Roese <sr@denx.de> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
* tiny-printf: Support sprintf()Marek Vasut2016-06-021-2/+14
| | | | | | | | | | | | | | Add a simple version of this function for SPL. It does not check the buffer size as this would add to the code size. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Stefan Roese <sr@denx.de> Cc: Tom Rini <trini@konsulko.com> Cc: lesne@alse-fr.com Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Sylvain Lesne <lesne@alse-fr.com> Tested-by: Sylvain Lesne <lesne@alse-fr.com>
* tiny-printf: Support snprintf()Simon Glass2016-05-261-2/+25
| | | | | | | | Add a simple version of this function for SPL. It does not check the buffer size as this would add to the code size. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de>
* tiny-printf: Tidy up a few nitsSimon Glass2016-05-261-8/+8
| | | | | | | | | - Rename 'w' to 'width' to make it more obvious what it is used for - Use bool and int types instead of char to avoid register-masking on 32-bit machines Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de>
* tiny-printf: Always print zeroesSimon Glass2016-01-201-4/+12
| | | | | | | | | At present this does not print zero values in numeric format (hex and decimal). Add a special case for this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Tom Rini <trini@konsulko.com>
* tiny-printf: Avoid printing NULL stringsSimon Glass2016-01-201-2/+4
| | | | | | | Add a check for NULL strings to avoid printing junk to the console. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de>
* lib/tiny-printf.c: Implement vprintfSjoerd Simons2015-12-131-5/+13
| | | | | | | Implement both printf and vprintf for a bit more flexibility, e.g. allows the panic() function to work with tiny-printf. Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
* lib/tiny-printf.c: Support numbers bigger than 0xffff and misc updatesStefan Roese2015-11-231-20/+12
| | | | | | | | | | | | | | | | | | | | | | | With this patch now, the tiny printf() function also supports numbers bigger than 0xffff. Additionally the code is simplified a bit and some static variables are moved to function parameters. Also the upper case hex variable output support is removed, as its not really needed in this simple printf version. And removing it reduces the complexity and the code size again a bit. Here the new numbers, again on the db-mv784mp-gp (Armada XP): Without this patch: 56542 18536 1956 77034 12cea ./spl/u-boot-spl With this patch: 56446 18536 1936 76918 12c76 ./spl/u-boot-spl Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Tom Rini <trini@konsulko.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net>
* lib/tiny-printf.c: Add tiny printf function for space limited environmentsStefan Roese2015-11-231-0/+130
This patch adds a small printf() version that supports all basic formats. Its intented to be used in U-Boot SPL versions on platforms with very limited internal RAM sizes. To enable it, just define CONFIG_USE_TINY_PRINTF in your defconfig. This will result in the SPL using this tiny function and the main U-Boot still using the full-blown printf() function. This code was copied from: http://www.sparetimelabs.com/printfrevisited With mostly only coding style related changes so that its checkpatch clean. The size reduction is about 2.5KiB. Here a comparison for the db-mv784mp-gp (Marvell AXP) SPL: Without this patch: 58963 18536 1928 79427 13643 ./spl/u-boot-spl With this patch: 56542 18536 1956 77034 12cea ./spl/u-boot-spl Note: To make it possible to compile tiny-printf.c instead of vsprintf.c when CONFIG_USE_TINY_PRINTF is defined, the functions printf() and vprintf() are moved from common/console.c into vsprintf.c in this patch. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Tom Rini <trini@konsulko.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net>
generated by cgit (git 2.34.1) at 2024-11-19 03:46:16 +0000