From 146d05da93c3cfdb97023ead2cb673a8d5de6b4f Mon Sep 17 00:00:00 2001 From: Patrick Georgi Date: Mon, 30 Mar 2015 13:08:18 +0200 Subject: imgtec/pistachio: Bring uart driver to modern standards The console interface changed in upstream, and the driver didn't reflect that yet. This wasn't obvious because the driver wasn't compiled at all. Change-Id: Id18391e62e7ebd8f5fc929838ce27bf414e364f9 Signed-off-by: Patrick Georgi Reviewed-on: http://review.coreboot.org/9165 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/imgtec/pistachio/Makefile.inc | 2 +- src/soc/imgtec/pistachio/uart.c | 75 ++++++++++------------------------- 2 files changed, 23 insertions(+), 54 deletions(-) (limited to 'src/soc') diff --git a/src/soc/imgtec/pistachio/Makefile.inc b/src/soc/imgtec/pistachio/Makefile.inc index e695abd5bb..b91bb1b59a 100644 --- a/src/soc/imgtec/pistachio/Makefile.inc +++ b/src/soc/imgtec/pistachio/Makefile.inc @@ -24,7 +24,7 @@ bootblock-y += spi.c romstage-y += spi.c ramstage-y += spi.c -ifeq ($(CONFIG_CONSOLE_SERIAL_UART),y) +ifeq ($(CONFIG_DRIVERS_UART),y) bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c romstage-y += uart.c ramstage-y += uart.c diff --git a/src/soc/imgtec/pistachio/uart.c b/src/soc/imgtec/pistachio/uart.c index 53bf21d226..9c96b89f8e 100644 --- a/src/soc/imgtec/pistachio/uart.c +++ b/src/soc/imgtec/pistachio/uart.c @@ -22,11 +22,12 @@ */ #include +#include #include +#include #include #include -#include -#include +#include /* Should support 8250, 16450, 16550, 16550A type UARTs */ @@ -115,13 +116,13 @@ static void uart8250_mem_init(unsigned base_port, unsigned divisor) write_lcr(base_port, CONFIG_TTYS0_LCS); } -static unsigned int uart_platform_refclk(void) +unsigned int uart_platform_refclk(void) { /* TODO: this is entirely arbitrary */ return 1000000; } -static unsigned int uart_platform_base(int idx) +uintptr_t uart_platform_base(int idx) { switch (idx) { case 0: @@ -135,16 +136,9 @@ static unsigned int uart_platform_base(int idx) } } -/* Calculate divisor. Do not floor but round to nearest integer. */ -static unsigned int uart_baudrate_divisor(unsigned int baudrate, - unsigned int refclk, unsigned int oversample) +void uart_init(int idx) { - return (1 + (2 * refclk) / (baudrate * oversample)) / 2; -} - -static void pistachio_uart_init(void) -{ - u32 base = uart_platform_base(0); + u32 base = uart_platform_base(idx); if (!base) return; @@ -154,64 +148,39 @@ static void pistachio_uart_init(void) uart8250_mem_init(base, div); } -static void pistachio_uart_tx_byte(unsigned char data) +void uart_tx_byte(int idx, unsigned char data) { - u32 base = uart_platform_base(0); + u32 base = uart_platform_base(idx); if (!base) return; uart8250_mem_tx_byte(base, data); } -static unsigned char pistachio_uart_rx_byte(void) +unsigned char uart_rx_byte(int idx) { - u32 base = uart_platform_base(0); + u32 base = uart_platform_base(idx); if (!base) return 0xff; return uart8250_mem_rx_byte(base); } -static void pistachio_uart_tx_flush(void) +void uart_tx_flush(int idx) { - u32 base = uart_platform_base(0); + u32 base = uart_platform_base(idx); if (!base) return; uart8250_mem_tx_flush(base); } -#if !defined(__PRE_RAM__) - -static const struct console_driver pistachio_uart_console __console = { - .init = pistachio_uart_init, - .tx_byte = pistachio_uart_tx_byte, - .tx_flush = pistachio_uart_tx_flush, - .rx_byte = pistachio_uart_rx_byte, -}; - -uint32_t uartmem_getbaseaddr(void) -{ - return uart_platform_base(0); -} - -#else /* __PRE_RAM__ */ - -void uart_init(void) -{ - pistachio_uart_init(); -} - -void uart_tx_byte(unsigned char data) +#ifndef __PRE_RAM__ +void uart_fill_lb(void *data) { - pistachio_uart_tx_byte(data); -} + struct lb_serial serial; + serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED; + serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE); + serial.baud = default_baudrate(); + lb_add_serial(&serial, data); -unsigned char uart_rx_byte(void) -{ - return pistachio_uart_rx_byte(); + lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data); } - -void uart_tx_flush(void) -{ - pistachio_uart_tx_flush(); -} - -#endif /* __PRE_RAM__ */ +#endif -- cgit v1.2.3