diff options
Diffstat (limited to 'drivers/renesas/rcar/console/rcar_console.S')
| -rw-r--r-- | drivers/renesas/rcar/console/rcar_console.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/renesas/rcar/console/rcar_console.S b/drivers/renesas/rcar/console/rcar_console.S new file mode 100644 index 00000000..e3c73636 --- /dev/null +++ b/drivers/renesas/rcar/console/rcar_console.S @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2018, Renesas Electronics Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch.h> +#include <asm_macros.S> + + .globl console_init + .globl console_putc + .globl console_uninit + .globl console_core_init + .globl console_core_putc + .globl console_core_getc + .globl console_flush + + .extern rcar_log_init + .extern rcar_set_log_data + + /* ----------------------------------------------- + * int console_core_init(unsigned long base_addr, + * unsigned int uart_clk, unsigned int baud_rate) + * Function to initialize the log area. This + * function will be accessed by console_init and + * crash reporting. + * Return 1 on SUCCESS, 0 on error + * In: x0 - Not used + * w1 - Not used + * w2 - Not used + * ----------------------------------------------- + */ +func console_core_init + b rcar_log_init +endfunc console_core_init +func console_init + b console_core_init +endfunc console_init + + /* -------------------------------------------------------- + * int console_core_putc(int c, unsigned long base_addr) + * Function to output a character over the log area. + * Return 1 on SUCCESS, 0 on error + * In : w0 - Not used + * x1 - Not used + * -------------------------------------------------------- + */ +func console_core_putc + b rcar_set_log_data +endfunc console_core_putc +func console_putc + b console_core_putc +endfunc console_putc + + /* --------------------------------------------- + * int console_core_getc(unsigned long base_addr) + * Function to get a character from the console. + * It returns the character grabbed on success + * or -1 on error. + * In : x0 - console base address + * Clobber list : x0, x1 + * --------------------------------------------- + */ +func console_core_getc + ret +endfunc console_core_getc + + /* ----------------------------------------------- + * void console_uninit(void) + * Function to finish the use of console driver. + * ----------------------------------------------- + */ +func console_uninit + ret +endfunc console_uninit + + /* --------------------------------------------- + * int console_flush(void) + * Function to force a write of all buffered + * data that hasn't been output. It returns 0 + * upon successful completion, otherwise it + * returns -1. + * Clobber list : x0, x1 + * --------------------------------------------- + */ +func console_flush + mov w0, #0 + ret +endfunc console_flush |