diff options
Diffstat (limited to 'drivers/cadence/uart/aarch64/cdns_console.S')
| -rw-r--r-- | drivers/cadence/uart/aarch64/cdns_console.S | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/drivers/cadence/uart/aarch64/cdns_console.S b/drivers/cadence/uart/aarch64/cdns_console.S index ecd0c478d..4c1a80efc 100644 --- a/drivers/cadence/uart/aarch64/cdns_console.S +++ b/drivers/cadence/uart/aarch64/cdns_console.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -56,14 +56,14 @@ endfunc console_cdns_core_init /* ----------------------------------------------- * int console_cdns_register(uintptr_t baseaddr, * uint32_t clock, uint32_t baud, - * console_cdns_t *console); + * console_t *console); * Function to initialize and register a new CDNS * console. Storage passed in for the console struct * *must* be persistent (i.e. not from the stack). * In: x0 - UART register base address * w1 - UART clock in Hz * w2 - Baud rate - * x3 - pointer to empty console_16550_t struct + * x3 - pointer to empty console_t struct * Out: return 1 on success, 0 on error * Clobber list : x0, x1, x2, x6, x7, x14 * ----------------------------------------------- @@ -72,7 +72,7 @@ func console_cdns_register mov x7, x30 mov x6, x3 cbz x6, register_fail - str x0, [x6, #CONSOLE_T_CDNS_BASE] + str x0, [x6, #CONSOLE_T_BASE] bl console_cdns_core_init cbz x0, register_fail @@ -105,21 +105,21 @@ func console_cdns_core_putc cmp w0, #0xA b.ne 2f 1: - /* Check if the transmit FIFO is full */ + /* Check if the transmit FIFO is empty */ ldr w2, [x1, #R_UART_SR] - tbnz w2, #UART_SR_INTR_TFUL_BIT, 1b + tbz w2, #UART_SR_INTR_TEMPTY_BIT, 1b mov w2, #0xD str w2, [x1, #R_UART_TX] 2: - /* Check if the transmit FIFO is full */ + /* Check if the transmit FIFO is empty */ ldr w2, [x1, #R_UART_SR] - tbnz w2, #UART_SR_INTR_TFUL_BIT, 2b + tbz w2, #UART_SR_INTR_TEMPTY_BIT, 2b str w0, [x1, #R_UART_TX] ret endfunc console_cdns_core_putc /* -------------------------------------------------------- - * int console_cdns_putc(int c, console_cdns_t *cdns) + * int console_cdns_putc(int c, console_t *cdns) * Function to output a character over the console. It * returns the character printed on success or -1 on error. * In : w0 - character to be printed @@ -133,7 +133,7 @@ func console_cdns_putc cmp x1, #0 ASM_ASSERT(ne) #endif /* ENABLE_ASSERTIONS */ - ldr x1, [x1, #CONSOLE_T_CDNS_BASE] + ldr x1, [x1, #CONSOLE_T_BASE] b console_cdns_core_putc endfunc console_cdns_putc @@ -165,7 +165,7 @@ no_char: endfunc console_cdns_core_getc /* --------------------------------------------- - * int console_cdns_getc(console_cdns_t *console) + * int console_cdns_getc(console_t *console) * Function to get a character from the console. * It returns the character grabbed on success * or -1 if no character is available. @@ -179,16 +179,16 @@ func console_cdns_getc cmp x0, #0 ASM_ASSERT(ne) #endif /* ENABLE_ASSERTIONS */ - ldr x0, [x0, #CONSOLE_T_CDNS_BASE] + ldr x0, [x0, #CONSOLE_T_BASE] b console_cdns_core_getc endfunc console_cdns_getc /* --------------------------------------------- - * int console_cdns_core_flush(uintptr_t base_addr) + * void console_cdns_core_flush(uintptr_t base_addr) * Function to force a write of all buffered * data that hasn't been output. * In : x0 - console base address - * Out : return -1 on error else return 0. + * Out : void * Clobber list : x0, x1 * --------------------------------------------- */ @@ -198,16 +198,15 @@ func console_cdns_core_flush ASM_ASSERT(ne) #endif /* ENABLE_ASSERTIONS */ /* Placeholder */ - mov w0, #0 ret endfunc console_cdns_core_flush /* --------------------------------------------- - * int console_cdns_flush(console_pl011_t *console) + * void console_cdns_flush(console_t *console) * Function to force a write of all buffered * data that hasn't been output. * In : x0 - pointer to console_t structure - * Out : return -1 on error else return 0. + * Out : void. * Clobber list : x0, x1 * --------------------------------------------- */ @@ -216,6 +215,6 @@ func console_cdns_flush cmp x0, #0 ASM_ASSERT(ne) #endif /* ENABLE_ASSERTIONS */ - ldr x0, [x0, #CONSOLE_T_CDNS_BASE] + ldr x0, [x0, #CONSOLE_T_BASE] b console_cdns_core_flush endfunc console_cdns_flush |