diff options
Diffstat (limited to 'post')
| -rw-r--r-- | post/Makefile | 3 | ||||
| -rw-r--r-- | post/cpu/ppc4xx/uart.c | 105 |
2 files changed, 43 insertions, 65 deletions
diff --git a/post/Makefile b/post/Makefile index 769e9c6..169d126 100644 --- a/post/Makefile +++ b/post/Makefile @@ -26,7 +26,8 @@ include $(OBJTREE)/include/autoconf.mk LIB = libpost.a GPLIB-$(CONFIG_HAS_POST) += libgenpost.a -COBJS-$(CONFIG_HAS_POST) += post.o tests.o +COBJS-$(CONFIG_HAS_POST) += post.o +COBJS-$(CONFIG_POST_STD_LIST) += tests.o SPLIB-$(CONFIG_HAS_POST) = drivers/libpostdrivers.a SPLIB-$(CONFIG_HAS_POST) += $(shell if [ -d lib_$(ARCH) ]; then echo \ diff --git a/post/cpu/ppc4xx/uart.c b/post/cpu/ppc4xx/uart.c index be217fc..6b61cc1 100644 --- a/post/cpu/ppc4xx/uart.c +++ b/post/cpu/ppc4xx/uart.c @@ -4,6 +4,8 @@ * * Author: Igor Lisitsin <igor@emcraft.com> * + * Copyright 2010, Stefan Roese, DENX Software Engineering, sr@denx.de + * * See file CREDITS for list of people who contributed to this * project. * @@ -24,6 +26,9 @@ */ #include <common.h> +#include <ppc4xx.h> +#include <ns16550.h> +#include <asm/io.h> /* * UART test @@ -119,32 +124,23 @@ #define UDIV_MAX 32 #endif -#define UART_RBR 0x00 -#define UART_THR 0x00 -#define UART_IER 0x01 -#define UART_IIR 0x02 -#define UART_FCR 0x02 -#define UART_LCR 0x03 -#define UART_MCR 0x04 -#define UART_LSR 0x05 -#define UART_MSR 0x06 -#define UART_SCR 0x07 -#define UART_DLL 0x00 -#define UART_DLM 0x01 +DECLARE_GLOBAL_DATA_PTR; -/* - * Line Status Register. - */ -#define asyncLSRDataReady1 0x01 -#define asyncLSROverrunError1 0x02 -#define asyncLSRParityError1 0x04 -#define asyncLSRFramingError1 0x08 -#define asyncLSRBreakInterrupt1 0x10 -#define asyncLSRTxHoldEmpty1 0x20 -#define asyncLSRTxShiftEmpty1 0x40 -#define asyncLSRRxFifoError1 0x80 +static void uart_post_init_common(struct NS16550 *com_port, unsigned short bdiv) +{ + volatile char val; -DECLARE_GLOBAL_DATA_PTR; + out_8(&com_port->lcr, 0x80); /* set DLAB bit */ + out_8(&com_port->dll, bdiv); /* set baudrate divisor */ + out_8(&com_port->dlm, bdiv >> 8); /* set baudrate divisor */ + out_8(&com_port->lcr, 0x03); /* clear DLAB; set 8 bits, no parity */ + out_8(&com_port->fcr, 0x00); /* disable FIFO */ + out_8(&com_port->mcr, 0x10); /* enable loopback mode */ + val = in_8(&com_port->lsr); /* clear line status */ + val = in_8(&com_port->rbr); /* read receive buffer */ + out_8(&com_port->scr, 0x00); /* set scratchpad */ + out_8(&com_port->ier, 0x00); /* set interrupt enable reg */ +} #if defined(CONFIG_440) || defined(CONFIG_405EX) #if !defined(CONFIG_SYS_EXT_SERIAL_CLOCK) @@ -190,19 +186,18 @@ static void serial_divs (int baudrate, unsigned long *pudiv, } #endif -static int uart_post_init (unsigned long dev_base) +static int uart_post_init (struct NS16550 *com_port) { unsigned long reg = 0; unsigned long udiv; unsigned short bdiv; - volatile char val; #ifdef CONFIG_SYS_EXT_SERIAL_CLOCK unsigned long tmp; #endif int i; for (i = 0; i < 3500; i++) { - if (in8 (dev_base + UART_LSR) & asyncLSRTxHoldEmpty1) + if (in_8(&com_port->lsr) & UART_LSR_THRE) break; udelay (100); } @@ -239,34 +234,24 @@ static int uart_post_init (unsigned long dev_base) MTREG(UART3_SDR, reg); #endif - out8(dev_base + UART_LCR, 0x80); /* set DLAB bit */ - out8(dev_base + UART_DLL, bdiv); /* set baudrate divisor */ - out8(dev_base + UART_DLM, bdiv >> 8); /* set baudrate divisor */ - out8(dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ - out8(dev_base + UART_FCR, 0x00); /* disable FIFO */ - out8(dev_base + UART_MCR, 0x10); /* enable loopback mode */ - val = in8(dev_base + UART_LSR); /* clear line status */ - val = in8(dev_base + UART_RBR); /* read receive buffer */ - out8(dev_base + UART_SCR, 0x00); /* set scratchpad */ - out8(dev_base + UART_IER, 0x00); /* set interrupt enable reg */ + uart_post_init_common(com_port, bdiv); return 0; } #else /* CONFIG_440 */ -static int uart_post_init (unsigned long dev_base) +static int uart_post_init (struct NS16550 *com_port) { unsigned long reg; unsigned long tmp; unsigned long clk; unsigned long udiv; unsigned short bdiv; - volatile char val; int i; for (i = 0; i < 3500; i++) { - if (in8 (dev_base + UART_LSR) & asyncLSRTxHoldEmpty1) + if (in_8(&com_port->lsr) & UART_LSR_THRE) break; udelay (100); } @@ -309,59 +294,51 @@ static int uart_post_init (unsigned long dev_base) bdiv = (clk + tmp / 2) / tmp; #endif /* CONFIG_405EZ */ - out8(dev_base + UART_LCR, 0x80); /* set DLAB bit */ - out8(dev_base + UART_DLL, bdiv); /* set baudrate divisor */ - out8(dev_base + UART_DLM, bdiv >> 8); /* set baudrate divisor */ - out8(dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ - out8(dev_base + UART_FCR, 0x00); /* disable FIFO */ - out8(dev_base + UART_MCR, 0x10); /* enable loopback mode */ - val = in8(dev_base + UART_LSR); /* clear line status */ - val = in8(dev_base + UART_RBR); /* read receive buffer */ - out8(dev_base + UART_SCR, 0x00); /* set scratchpad */ - out8(dev_base + UART_IER, 0x00); /* set interrupt enable reg */ - - return (0); + uart_post_init_common(com_port, bdiv); + + return 0; } #endif /* CONFIG_440 */ -static void uart_post_putc (unsigned long dev_base, char c) +static void uart_post_putc (struct NS16550 *com_port, char c) { int i; - out8 (dev_base + UART_THR, c); /* put character out */ + out_8(&com_port->thr, c); /* put character out */ /* Wait for transfer completion */ for (i = 0; i < 3500; i++) { - if (in8 (dev_base + UART_LSR) & asyncLSRTxHoldEmpty1) + if (in_8(&com_port->lsr) & UART_LSR_THRE) break; udelay (100); } } -static int uart_post_getc (unsigned long dev_base) +static int uart_post_getc (struct NS16550 *com_port) { int i; /* Wait for character available */ for (i = 0; i < 3500; i++) { - if (in8 (dev_base + UART_LSR) & asyncLSRDataReady1) + if (in_8(&com_port->lsr) & UART_LSR_DR) break; udelay (100); } - return 0xff & in8 (dev_base + UART_RBR); + + return 0xff & in_8(&com_port->rbr); } -static int test_ctlr (unsigned long dev_base, int index) +static int test_ctlr (struct NS16550 *com_port, int index) { int res = -1; char test_str[] = "*** UART Test String ***\r\n"; int i; - uart_post_init (dev_base); + uart_post_init (com_port); for (i = 0; i < sizeof (test_str) - 1; i++) { - uart_post_putc (dev_base, test_str[i]); - if (uart_post_getc (dev_base) != test_str[i]) + uart_post_putc (com_port, test_str[i]); + if (uart_post_getc (com_port) != test_str[i]) goto done; } res = 0; @@ -377,8 +354,8 @@ int uart_post_test (int flags) int i, res = 0; static unsigned long base[] = CONFIG_SYS_POST_UART_TABLE; - for (i = 0; i < sizeof (base) / sizeof (base[0]); i++) { - if (test_ctlr (base[i], i)) + for (i = 0; i < ARRAY_SIZE(base); i++) { + if (test_ctlr((struct NS16550 *)base[i], i)) res = -1; } serial_reinit_all (); |