diff options
| author | Christoph Niedermaier <[email protected]> | 2025-05-08 13:57:25 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-05-22 10:57:12 -0600 |
| commit | 1e24e84db41afc5beba0a0ef9dd6e0509127b1de (patch) | |
| tree | 873f17ab0a1f9c4d1ac03e092f3c5cfff42c2fb4 /common | |
| parent | 0a006371578a8f098c1850b0097c1af68c018165 (diff) | |
tiny-printf: Handle formatting of %p with an extra Kconfig
The formatting with %pa / %pap behaves like %x, which results in an
incorrect value being output. To improve this, a new fine-tuning
Kconfig SPL_USE_TINY_PRINTF_POINTER_SUPPORT for pointer formatting
has been added. If it is enabled, the output of %pa / %pap should
be correct, and if it is disabled, the pointer formatting is
completely unsupported. In addition to indicate unsupported formatting,
'?' will be output. This allows enabling pointer formatting only
when needed. For SPL_NET it is selected by default. Then it also
supports the formatting with %pm, %pM and %pI4.
In summery this level of %p support for tiny printf is possible now:
1) The standard tiny printf won't have support for pointer formatting.
So it doesn't print misleading values for %pa, instead '?' will be
output:
%p => ?
%pa => ?a
%pap => ?ap
2) If SPL_USE_TINY_PRINTF_POINTER_SUPPORT is enabled or DEBUG is defined
tiny printf supports formatting %p and %pa / %pap.
3) If SPL_NET is enabled the support of pointers is extended
for %pm, %pM and %pI4.
Signed-off-by: Christoph Niedermaier <[email protected]>
Diffstat (limited to 'common')
| -rw-r--r-- | common/spl/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/common/spl/Kconfig b/common/spl/Kconfig index aa3a85eea54..a84a0f83924 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -1123,6 +1123,7 @@ config SPL_DM_SPI_FLASH config SPL_NET bool "Support networking" depends on !NET_LWIP + select SPL_USE_TINY_PRINTF_POINTER_SUPPORT if SPL_USE_TINY_PRINTF help Enable support for network devices (such as Ethernet) in SPL. This permits SPL to load U-Boot over a network link rather than |