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pbl: console: Let console pointer survive BSS clearing 

The PBL console support may be configured before the BSS segment
is cleared. Put the pointer into the data section so that it is
not affected by the BSS clearing.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2016-07-12 12:18:05 +02:00
parent 7dc3354ac8
commit 80c55cb483
1 changed files with 10 additions and 5 deletions
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15
pbl/console.c
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@ -1,8 +1,13 @@
#include <common.h>
#include <debug_ll.h>
#include <linux/err.h>
static void (*__putc)(void *ctx, int c);
static void *putc_ctx;
/*
* Put these in the data section so that they survive the clearing of the
* BSS segment.
*/
static __attribute__ ((section(".data"))) void (*__putc)(void *ctx, int c);
static __attribute__ ((section(".data"))) void *putc_ctx;
/**
* pbl_set_putc() - setup UART used for PBL console
@ -20,10 +25,10 @@ void pbl_set_putc(void (*putcf)(void *ctx, int c), void *ctx)
void console_putc(unsigned int ch, char c)
{
if (!__putc)
putc_ll(c);
else
if (__putc)
__putc(putc_ctx, c);
else
putc_ll(c);
}
int console_puts(unsigned int ch, const char *str)