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nios2: set up the debug UART early 

Set up the debug UART early if enabled, so that it is ready to use.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Chin Liang See <clsee@altera.com>
This commit is contained in:
Thomas Chou 2015-12-30 20:29:18 +08:00
parent 94985cc9d3
commit e4f348ba6f
1 changed files with 7 additions and 0 deletions
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7
arch/nios2/cpu/start.S
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@ -106,6 +106,13 @@ _reloc:
stw r0, 4(sp) stw r0, 4(sp)
mov fp, sp mov fp, sp
#ifdef CONFIG_DEBUG_UART
/* Set up the debug UART */
movhi r2, %hi(debug_uart_init@h)
ori r2, r2, %lo(debug_uart_init@h)
callr r2
#endif
/* Allocate and initialize reserved area, update SP */ /* Allocate and initialize reserved area, update SP */
mov r4, sp mov r4, sp
movhi r2, %hi(board_init_f_alloc_reserve@h) movhi r2, %hi(board_init_f_alloc_reserve@h)