From 9d803fc8125a3528f700da9064d1bfa3fbc56b13 Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Sun, 7 Apr 2013 19:04:14 +0800 Subject: blackfin: Move blackfin serial driver out of blackfin arch folder. - Move blackfin serial driver to the generic driver folder. - Move blackfin serial headers to blackfin arch head folder. - Update the include path to blackfin serial header in start up code. Signed-off-by: Sonic Zhang --- arch/blackfin/cpu/Makefile | 1 - arch/blackfin/cpu/cpu.c | 2 +- arch/blackfin/cpu/initcode.c | 5 +- arch/blackfin/cpu/serial.c | 412 ------------------------------------------- arch/blackfin/cpu/serial.h | 131 -------------- arch/blackfin/cpu/serial1.h | 342 ----------------------------------- arch/blackfin/cpu/serial4.h | 150 ---------------- arch/blackfin/cpu/start.S | 3 +- 8 files changed, 4 insertions(+), 1042 deletions(-) delete mode 100644 arch/blackfin/cpu/serial.c delete mode 100644 arch/blackfin/cpu/serial.h delete mode 100644 arch/blackfin/cpu/serial1.h delete mode 100644 arch/blackfin/cpu/serial4.h (limited to 'arch/blackfin/cpu') diff --git a/arch/blackfin/cpu/Makefile b/arch/blackfin/cpu/Makefile index 145f63eea7..929fc8b7ce 100644 --- a/arch/blackfin/cpu/Makefile +++ b/arch/blackfin/cpu/Makefile @@ -23,7 +23,6 @@ COBJS-y += interrupts.o COBJS-$(CONFIG_JTAG_CONSOLE) += jtag-console.o COBJS-y += os_log.o COBJS-y += reset.o -COBJS-y += serial.o COBJS-y += traps.o SRCS := $(SEXTRA:.o=.S) $(SOBJS:.o=.S) $(COBJS-y:.o=.c) diff --git a/arch/blackfin/cpu/cpu.c b/arch/blackfin/cpu/cpu.c index d841f64c82..218f57ed38 100644 --- a/arch/blackfin/cpu/cpu.c +++ b/arch/blackfin/cpu/cpu.c @@ -16,9 +16,9 @@ #include #include #include +#include #include "cpu.h" -#include "serial.h" #include "initcode.h" ulong bfin_poweron_retx; diff --git a/arch/blackfin/cpu/initcode.c b/arch/blackfin/cpu/initcode.c index 078209fc24..5fc06e11ff 100644 --- a/arch/blackfin/cpu/initcode.c +++ b/arch/blackfin/cpu/initcode.c @@ -16,10 +16,9 @@ #include #include #include +#include -#define BUG() while (1) { asm volatile("emuexcpt;"); } - -#include "serial.h" +#define BUG() while (1) asm volatile("emuexcpt;"); #ifndef __ADSPBF60x__ #include diff --git a/arch/blackfin/cpu/serial.c b/arch/blackfin/cpu/serial.c deleted file mode 100644 index c453a03c0c..0000000000 --- a/arch/blackfin/cpu/serial.c +++ /dev/null @@ -1,412 +0,0 @@ -/* - * U-boot - serial.c Blackfin Serial Driver - * - * Copyright (c) 2005-2008 Analog Devices Inc. - * - * Copyright (c) 2003 Bas Vermeulen , - * BuyWays B.V. (www.buyways.nl) - * - * Based heavily on: - * blkfinserial.c: Serial driver for BlackFin DSP internal USRTs. - * Copyright(c) 2003 Metrowerks - * Copyright(c) 2001 Tony Z. Kou - * Copyright(c) 2001-2002 Arcturus Networks Inc. - * - * Based on code from 68328 version serial driver imlpementation which was: - * Copyright (C) 1995 David S. Miller - * Copyright (C) 1998 Kenneth Albanowski - * Copyright (C) 1998, 1999 D. Jeff Dionne - * Copyright (C) 1999 Vladimir Gurevich - * - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Licensed under the GPL-2 or later. - */ - -/* Anomaly notes: - * 05000086 - we don't support autobaud - * 05000099 - we only use DR bit, so losing others is not a problem - * 05000100 - we don't use the UART_IIR register - * 05000215 - we poll the uart (no dma/interrupts) - * 05000225 - no workaround possible, but this shouldnt cause errors ... - * 05000230 - we tweak the baud rate calculation slightly - * 05000231 - we always use 1 stop bit - * 05000309 - we always enable the uart before we modify it in anyway - * 05000350 - we always enable the uart regardless of boot mode - * 05000363 - we don't support break signals, so don't generate one - */ - -#include -#include -#include -#include -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -#ifdef CONFIG_UART_CONSOLE - -#include "serial.h" - -#ifdef CONFIG_DEBUG_SERIAL -static uart_lsr_t cached_lsr[256]; -static uart_lsr_t cached_rbr[256]; -static size_t cache_count; - -/* The LSR is read-to-clear on some parts, so we have to make sure status - * bits aren't inadvertently lost when doing various tests. This also - * works around anomaly 05000099 at the same time by keeping a cumulative - * tally of all the status bits. - */ -static uart_lsr_t uart_lsr_save; -static uart_lsr_t uart_lsr_read(uint32_t uart_base) -{ - uart_lsr_t lsr = _lsr_read(pUART); - uart_lsr_save |= (lsr & (OE|PE|FE|BI)); - return lsr | uart_lsr_save; -} -/* Just do the clear for everyone since it can't hurt. */ -static void uart_lsr_clear(uint32_t uart_base) -{ - uart_lsr_save = 0; - _lsr_write(pUART, -1); -} -#else -/* When debugging is disabled, we only care about the DR bit, so if other - * bits get set/cleared, we don't really care since we don't read them - * anyways (and thus anomaly 05000099 is irrelevant). - */ -static inline uart_lsr_t uart_lsr_read(uint32_t uart_base) -{ - return _lsr_read(pUART); -} -static void uart_lsr_clear(uint32_t uart_base) -{ - _lsr_write(pUART, -1); -} -#endif - -static void uart_putc(uint32_t uart_base, const char c) -{ - /* send a \r for compatibility */ - if (c == '\n') - serial_putc('\r'); - - WATCHDOG_RESET(); - - /* wait for the hardware fifo to clear up */ - while (!(uart_lsr_read(uart_base) & THRE)) - continue; - - /* queue the character for transmission */ - bfin_write(&pUART->thr, c); - SSYNC(); - - WATCHDOG_RESET(); -} - -static int uart_tstc(uint32_t uart_base) -{ - WATCHDOG_RESET(); - return (uart_lsr_read(uart_base) & DR) ? 1 : 0; -} - -static int uart_getc(uint32_t uart_base) -{ - uint16_t uart_rbr_val; - - /* wait for data ! */ - while (!uart_tstc(uart_base)) - continue; - - /* grab the new byte */ - uart_rbr_val = bfin_read(&pUART->rbr); - -#ifdef CONFIG_DEBUG_SERIAL - /* grab & clear the LSR */ - uart_lsr_t uart_lsr_val = uart_lsr_read(uart_base); - - cached_lsr[cache_count] = uart_lsr_val; - cached_rbr[cache_count] = uart_rbr_val; - cache_count = (cache_count + 1) % ARRAY_SIZE(cached_lsr); - - if (uart_lsr_val & (OE|PE|FE|BI)) { - printf("\n[SERIAL ERROR]\n"); - do { - --cache_count; - printf("\t%3zu: RBR=0x%02x LSR=0x%02x\n", cache_count, - cached_rbr[cache_count], cached_lsr[cache_count]); - } while (cache_count > 0); - return -1; - } -#endif - uart_lsr_clear(uart_base); - - return uart_rbr_val; -} - -#if CONFIG_POST & CONFIG_SYS_POST_UART -# define LOOP(x) x -#else -# define LOOP(x) -#endif - -#if BFIN_UART_HW_VER < 4 - -LOOP( -static void uart_loop(uint32_t uart_base, int state) -{ - u16 mcr; - - /* Drain the TX fifo first so bytes don't come back */ - while (!(uart_lsr_read(uart_base) & TEMT)) - continue; - - mcr = bfin_read(&pUART->mcr); - if (state) - mcr |= LOOP_ENA | MRTS; - else - mcr &= ~(LOOP_ENA | MRTS); - bfin_write(&pUART->mcr, mcr); -} -) - -#else - -LOOP( -static void uart_loop(uint32_t uart_base, int state) -{ - u32 control; - - /* Drain the TX fifo first so bytes don't come back */ - while (!(uart_lsr_read(uart_base) & TEMT)) - continue; - - control = bfin_read(&pUART->control); - if (state) - control |= LOOP_ENA | MRTS; - else - control &= ~(LOOP_ENA | MRTS); - bfin_write(&pUART->control, control); -} -) - -#endif - -static inline void __serial_set_baud(uint32_t uart_base, uint32_t baud) -{ -#ifdef CONFIG_DEBUG_EARLY_SERIAL - serial_early_set_baud(uart_base, baud); -#else - uint16_t divisor = (get_uart_clk() + (baud * 8)) / (baud * 16) - - ANOMALY_05000230; - - /* Program the divisor to get the baud rate we want */ - serial_set_divisor(uart_base, divisor); -#endif -} - -static void uart_puts(uint32_t uart_base, const char *s) -{ - while (*s) - uart_putc(uart_base, *s++); -} - -#define DECL_BFIN_UART(n) \ -static int uart##n##_init(void) \ -{ \ - const unsigned short pins[] = { _P_UART(n, RX), _P_UART(n, TX), 0, }; \ - peripheral_request_list(pins, "bfin-uart"); \ - uart_init(MMR_UART(n)); \ - __serial_set_baud(MMR_UART(n), gd->baudrate); \ - uart_lsr_clear(MMR_UART(n)); \ - return 0; \ -} \ -\ -static int uart##n##_uninit(void) \ -{ \ - return serial_early_uninit(MMR_UART(n)); \ -} \ -\ -static void uart##n##_setbrg(void) \ -{ \ - __serial_set_baud(MMR_UART(n), gd->baudrate); \ -} \ -\ -static int uart##n##_getc(void) \ -{ \ - return uart_getc(MMR_UART(n)); \ -} \ -\ -static int uart##n##_tstc(void) \ -{ \ - return uart_tstc(MMR_UART(n)); \ -} \ -\ -static void uart##n##_putc(const char c) \ -{ \ - uart_putc(MMR_UART(n), c); \ -} \ -\ -static void uart##n##_puts(const char *s) \ -{ \ - uart_puts(MMR_UART(n), s); \ -} \ -\ -LOOP( \ -static void uart##n##_loop(int state) \ -{ \ - uart_loop(MMR_UART(n), state); \ -} \ -) \ -\ -struct serial_device bfin_serial##n##_device = { \ - .name = "bfin_uart"#n, \ - .start = uart##n##_init, \ - .stop = uart##n##_uninit, \ - .setbrg = uart##n##_setbrg, \ - .getc = uart##n##_getc, \ - .tstc = uart##n##_tstc, \ - .putc = uart##n##_putc, \ - .puts = uart##n##_puts, \ - LOOP(.loop = uart##n##_loop) \ -}; - -#ifdef UART0_RBR -DECL_BFIN_UART(0) -#endif -#ifdef UART1_RBR -DECL_BFIN_UART(1) -#endif -#ifdef UART2_RBR -DECL_BFIN_UART(2) -#endif -#ifdef UART3_RBR -DECL_BFIN_UART(3) -#endif - -__weak struct serial_device *default_serial_console(void) -{ -#if CONFIG_UART_CONSOLE == 0 - return &bfin_serial0_device; -#elif CONFIG_UART_CONSOLE == 1 - return &bfin_serial1_device; -#elif CONFIG_UART_CONSOLE == 2 - return &bfin_serial2_device; -#elif CONFIG_UART_CONSOLE == 3 - return &bfin_serial3_device; -#endif -} - -void bfin_serial_initialize(void) -{ -#ifdef UART0_RBR - serial_register(&bfin_serial0_device); -#endif -#ifdef UART1_RBR - serial_register(&bfin_serial1_device); -#endif -#ifdef UART2_RBR - serial_register(&bfin_serial2_device); -#endif -#ifdef UART3_RBR - serial_register(&bfin_serial3_device); -#endif -} - -#ifdef CONFIG_DEBUG_EARLY_SERIAL -inline void uart_early_putc(uint32_t uart_base, const char c) -{ - /* send a \r for compatibility */ - if (c == '\n') - uart_early_putc(uart_base, '\r'); - - /* wait for the hardware fifo to clear up */ - while (!(_lsr_read(pUART) & THRE)) - continue; - - /* queue the character for transmission */ - bfin_write(&pUART->thr, c); - SSYNC(); -} - -void uart_early_puts(const char *s) -{ - while (*s) - uart_early_putc(UART_BASE, *s++); -} - -/* Symbol for our assembly to call. */ -void _serial_early_set_baud(uint32_t baud) -{ - serial_early_set_baud(UART_BASE, baud); -} - -/* Symbol for our assembly to call. */ -void _serial_early_init(void) -{ - serial_early_init(UART_BASE); -} -#endif - -#elif defined(CONFIG_UART_MEM) - -char serial_logbuf[CONFIG_UART_MEM]; -char *serial_logbuf_head = serial_logbuf; - -int serial_mem_init(void) -{ - serial_logbuf_head = serial_logbuf; - return 0; -} - -void serial_mem_setbrg(void) -{ -} - -int serial_mem_tstc(void) -{ - return 0; -} - -int serial_mem_getc(void) -{ - return 0; -} - -void serial_mem_putc(const char c) -{ - *serial_logbuf_head = c; - if (++serial_logbuf_head == serial_logbuf + CONFIG_UART_MEM) - serial_logbuf_head = serial_logbuf; -} - -void serial_mem_puts(const char *s) -{ - while (*s) - serial_putc(*s++); -} - -struct serial_device bfin_serial_mem_device = { - .name = "bfin_uart_mem", - .start = serial_mem_init, - .setbrg = serial_mem_setbrg, - .getc = serial_mem_getc, - .tstc = serial_mem_tstc, - .putc = serial_mem_putc, - .puts = serial_mem_puts, -}; - - -__weak struct serial_device *default_serial_console(void) -{ - return &bfin_serial_mem_device; -} - -void bfin_serial_initialize(void) -{ - serial_register(&bfin_serial_mem_device); -} -#endif /* CONFIG_UART_MEM */ diff --git a/arch/blackfin/cpu/serial.h b/arch/blackfin/cpu/serial.h deleted file mode 100644 index 87a337d1b4..0000000000 --- a/arch/blackfin/cpu/serial.h +++ /dev/null @@ -1,131 +0,0 @@ -/* - * serial.h - common serial defines for early debug and serial driver. - * any functions defined here must be always_inline since - * initcode cannot have function calls. - * - * Copyright (c) 2004-2011 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#ifndef __BFIN_CPU_SERIAL_H__ -#define __BFIN_CPU_SERIAL_H__ - -#include -#include - -#ifndef CONFIG_UART_CONSOLE -# define CONFIG_UART_CONSOLE 0 -#endif - -#ifdef CONFIG_DEBUG_EARLY_SERIAL -# define BFIN_DEBUG_EARLY_SERIAL 1 -#else -# define BFIN_DEBUG_EARLY_SERIAL 0 -#endif - -#if defined(__ADSPBF60x__) -# define BFIN_UART_HW_VER 4 -#elif defined(__ADSPBF50x__) || defined(__ADSPBF54x__) -# define BFIN_UART_HW_VER 2 -#else -# define BFIN_UART_HW_VER 1 -#endif - -#define __PASTE_UART(num, pfx, sfx) pfx##num##_##sfx -#define _PASTE_UART(num, pfx, sfx) __PASTE_UART(num, pfx, sfx) -#define _P_UART(n, pin) _PASTE_UART(n, P_UART, pin) -#define P_UART(pin) _P_UART(CONFIG_UART_CONSOLE, pin) - -#define pUART ((volatile struct bfin_mmr_serial *)uart_base) - -#ifndef __ASSEMBLY__ -__attribute__((always_inline)) -static inline void serial_do_portmux(void); -#endif - -#if BFIN_UART_HW_VER < 4 -# include "serial1.h" -#else -# include "serial4.h" -#endif - -#ifndef __ASSEMBLY__ - -__attribute__((always_inline)) -static inline void serial_do_portmux(void) -{ - if (!BFIN_DEBUG_EARLY_SERIAL) { - const unsigned short pins[] = { P_UART(RX), P_UART(TX), 0, }; - peripheral_request_list(pins, "bfin-uart"); - return; - } - - serial_early_do_portmux(); -} - -#ifndef BFIN_IN_INITCODE -__attribute__((always_inline)) -static inline void serial_early_puts(const char *s) -{ - if (BFIN_DEBUG_EARLY_SERIAL) { - serial_puts("Early: "); - serial_puts(s); - } -} -#endif - -#else - -.macro serial_early_init -#if defined(CONFIG_DEBUG_EARLY_SERIAL) && !defined(CONFIG_UART_MEM) - call __serial_early_init; -#endif -.endm - -.macro serial_early_set_baud -#if defined(CONFIG_DEBUG_EARLY_SERIAL) && !defined(CONFIG_UART_MEM) - R0.L = LO(CONFIG_BAUDRATE); - R0.H = HI(CONFIG_BAUDRATE); - call __serial_early_set_baud; -#endif -.endm - -#if CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_BYPASS -#define update_serial_early_string_addr \ - R1.L = _start; \ - R1.H = _start; \ - R0 = R0 - R1; \ - R1.L = 0; \ - R1.H = 0x2000; \ - R0 = R0 + R1; -#else -#define update_serial_early_string_addr -#endif - -/* Since we embed the string right into our .text section, we need - * to find its address. We do this by getting our PC and adding 2 - * bytes (which is the length of the jump instruction). Then we - * pass this address to serial_puts(). - */ -#ifdef CONFIG_DEBUG_EARLY_SERIAL -# define serial_early_puts(str) \ - .section .rodata; \ - 7: \ - .ascii "Early:"; \ - .ascii __FILE__; \ - .ascii ": "; \ - .ascii str; \ - .asciz "\n"; \ - .previous; \ - R0.L = 7b; \ - R0.H = 7b; \ - update_serial_early_string_addr \ - call _uart_early_puts; -#else -# define serial_early_puts(str) -#endif - -#endif - -#endif diff --git a/arch/blackfin/cpu/serial1.h b/arch/blackfin/cpu/serial1.h deleted file mode 100644 index 467d3817f1..0000000000 --- a/arch/blackfin/cpu/serial1.h +++ /dev/null @@ -1,342 +0,0 @@ -/* - * serial.h - common serial defines for early debug and serial driver. - * any functions defined here must be always_inline since - * initcode cannot have function calls. - * - * Copyright (c) 2004-2011 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#ifndef __BFIN_CPU_SERIAL1_H__ -#define __BFIN_CPU_SERIAL1_H__ - -#include - -#ifndef __ASSEMBLY__ - -#include - -#define MMR_UART(n) _PASTE_UART(n, UART, DLL) -#ifdef UART_DLL -# define UART0_DLL UART_DLL -# if CONFIG_UART_CONSOLE != 0 -# error CONFIG_UART_CONSOLE must be 0 on parts with only one UART -# endif -#endif -#define UART_BASE MMR_UART(CONFIG_UART_CONSOLE) - -#define LOB(x) ((x) & 0xFF) -#define HIB(x) (((x) >> 8) & 0xFF) - -/* - * All Blackfin system MMRs are padded to 32bits even if the register - * itself is only 16bits. So use a helper macro to streamline this. - */ -struct bfin_mmr_serial { -#if BFIN_UART_HW_VER == 2 - u16 dll; - u16 __pad_0; - u16 dlh; - u16 __pad_1; - u16 gctl; - u16 __pad_2; - u16 lcr; - u16 __pad_3; - u16 mcr; - u16 __pad_4; - u16 lsr; - u16 __pad_5; - u16 msr; - u16 __pad_6; - u16 scr; - u16 __pad_7; - u16 ier_set; - u16 __pad_8; - u16 ier_clear; - u16 __pad_9; - u16 thr; - u16 __pad_10; - u16 rbr; - u16 __pad_11; -#else - union { - u16 dll; - u16 thr; - const u16 rbr; - }; - const u16 __spad0; - union { - u16 dlh; - u16 ier; - }; - const u16 __spad1; - const u16 iir; - u16 __pad_0; - u16 lcr; - u16 __pad_1; - u16 mcr; - u16 __pad_2; - u16 lsr; - u16 __pad_3; - u16 msr; - u16 __pad_4; - u16 scr; - u16 __pad_5; - const u32 __spad2; - u16 gctl; - u16 __pad_6; -#endif -}; - -#define uart_lsr_t uint32_t -#define _lsr_read(p) bfin_read(&p->lsr) -#define _lsr_write(p, v) bfin_write(&p->lsr, v) - -#if BFIN_UART_HW_VER == 2 -# define ACCESS_LATCH() -# define ACCESS_PORT_IER() -#else -# define ACCESS_LATCH() bfin_write_or(&pUART->lcr, DLAB) -# define ACCESS_PORT_IER() bfin_write_and(&pUART->lcr, ~DLAB) -#endif - -__attribute__((always_inline)) -static inline void serial_early_do_mach_portmux(char port, int mux_mask, - int mux_func, int port_pin) -{ - switch (port) { -#if defined(__ADSPBF54x__) - case 'B': - bfin_write_PORTB_MUX((bfin_read_PORTB_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTB_FER(bfin_read_PORTB_FER() | port_pin); - break; - case 'E': - bfin_write_PORTE_MUX((bfin_read_PORTE_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTE_FER(bfin_read_PORTE_FER() | port_pin); - break; -#endif -#if defined(__ADSPBF50x__) || defined(__ADSPBF51x__) || defined(__ADSPBF52x__) - case 'F': - bfin_write_PORTF_MUX((bfin_read_PORTF_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTF_FER(bfin_read_PORTF_FER() | port_pin); - break; - case 'G': - bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTG_FER(bfin_read_PORTG_FER() | port_pin); - break; - case 'H': - bfin_write_PORTH_MUX((bfin_read_PORTH_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTH_FER(bfin_read_PORTH_FER() | port_pin); - break; -#endif - default: - break; - } -} - -__attribute__((always_inline)) -static inline void serial_early_do_portmux(void) -{ -#if defined(__ADSPBF50x__) - switch (CONFIG_UART_CONSOLE) { - case 0: - serial_early_do_mach_portmux('G', PORT_x_MUX_7_MASK, - PORT_x_MUX_7_FUNC_1, PG12); /* TX: G; mux 7; func 1; PG12 */ - serial_early_do_mach_portmux('G', PORT_x_MUX_7_MASK, - PORT_x_MUX_7_FUNC_1, PG13); /* RX: G; mux 7; func 1; PG13 */ - break; - case 1: - serial_early_do_mach_portmux('F', PORT_x_MUX_3_MASK, - PORT_x_MUX_3_FUNC_1, PF7); /* TX: F; mux 3; func 1; PF6 */ - serial_early_do_mach_portmux('F', PORT_x_MUX_3_MASK, - PORT_x_MUX_3_FUNC_1, PF6); /* RX: F; mux 3; func 1; PF7 */ - break; - } -#elif defined(__ADSPBF51x__) - switch (CONFIG_UART_CONSOLE) { - case 0: - serial_early_do_mach_portmux('G', PORT_x_MUX_5_MASK, - PORT_x_MUX_5_FUNC_2, PG9); /* TX: G; mux 5; func 2; PG9 */ - serial_early_do_mach_portmux('G', PORT_x_MUX_5_MASK, - PORT_x_MUX_5_FUNC_2, PG10); /* RX: G; mux 5; func 2; PG10 */ - break; - case 1: - serial_early_do_mach_portmux('H', PORT_x_MUX_3_MASK, - PORT_x_MUX_3_FUNC_2, PH7); /* TX: H; mux 3; func 2; PH6 */ - serial_early_do_mach_portmux('H', PORT_x_MUX_3_MASK, - PORT_x_MUX_3_FUNC_2, PH6); /* RX: H; mux 3; func 2; PH7 */ - break; - } -#elif defined(__ADSPBF52x__) - switch (CONFIG_UART_CONSOLE) { - case 0: - serial_early_do_mach_portmux('G', PORT_x_MUX_2_MASK, - PORT_x_MUX_2_FUNC_3, PG7); /* TX: G; mux 2; func 3; PG7 */ - serial_early_do_mach_portmux('G', PORT_x_MUX_2_MASK, - PORT_x_MUX_2_FUNC_3, PG8); /* RX: G; mux 2; func 3; PG8 */ - break; - case 1: - serial_early_do_mach_portmux('F', PORT_x_MUX_5_MASK, - PORT_x_MUX_5_FUNC_3, PF14); /* TX: F; mux 5; func 3; PF14 */ - serial_early_do_mach_portmux('F', PORT_x_MUX_5_MASK, - PORT_x_MUX_5_FUNC_3, PF15); /* RX: F; mux 5; func 3; PF15 */ - break; - } -#elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) - const uint16_t func[] = { PFDE, PFTE, }; - bfin_write_PORT_MUX(bfin_read_PORT_MUX() & ~func[CONFIG_UART_CONSOLE]); - bfin_write_PORTF_FER(bfin_read_PORTF_FER() | - (1 << P_IDENT(P_UART(RX))) | - (1 << P_IDENT(P_UART(TX)))); -#elif defined(__ADSPBF54x__) - switch (CONFIG_UART_CONSOLE) { - case 0: - serial_early_do_mach_portmux('E', PORT_x_MUX_7_MASK, - PORT_x_MUX_7_FUNC_1, PE7); /* TX: E; mux 7; func 1; PE7 */ - serial_early_do_mach_portmux('E', PORT_x_MUX_8_MASK, - PORT_x_MUX_8_FUNC_1, PE8); /* RX: E; mux 8; func 1; PE8 */ - break; - case 1: - serial_early_do_mach_portmux('H', PORT_x_MUX_0_MASK, - PORT_x_MUX_0_FUNC_1, PH0); /* TX: H; mux 0; func 1; PH0 */ - serial_early_do_mach_portmux('H', PORT_x_MUX_1_MASK, - PORT_x_MUX_1_FUNC_1, PH1); /* RX: H; mux 1; func 1; PH1 */ - break; - case 2: - serial_early_do_mach_portmux('B', PORT_x_MUX_4_MASK, - PORT_x_MUX_4_FUNC_1, PB4); /* TX: B; mux 4; func 1; PB4 */ - serial_early_do_mach_portmux('B', PORT_x_MUX_5_MASK, - PORT_x_MUX_5_FUNC_1, PB5); /* RX: B; mux 5; func 1; PB5 */ - break; - case 3: - serial_early_do_mach_portmux('B', PORT_x_MUX_6_MASK, - PORT_x_MUX_6_FUNC_1, PB6); /* TX: B; mux 6; func 1; PB6 */ - serial_early_do_mach_portmux('B', PORT_x_MUX_7_MASK, - PORT_x_MUX_7_FUNC_1, PB7); /* RX: B; mux 7; func 1; PB7 */ - break; - } -#elif defined(__ADSPBF561__) - /* UART pins could be GPIO, but they aren't pin muxed. */ -#else -# if (P_UART(RX) & P_DEFINED) || (P_UART(TX) & P_DEFINED) -# error "missing portmux logic for UART" -# endif -#endif - SSYNC(); -} - -__attribute__((always_inline)) -static inline int uart_init(uint32_t uart_base) -{ - /* always enable UART -- avoids anomalies 05000309 and 05000350 */ - bfin_write(&pUART->gctl, UCEN); - - /* Set LCR to Word Lengh 8-bit word select */ - bfin_write(&pUART->lcr, WLS_8); - - SSYNC(); - - return 0; -} - -__attribute__((always_inline)) -static inline int serial_early_init(uint32_t uart_base) -{ - /* handle portmux crap on different Blackfins */ - serial_do_portmux(); - - return uart_init(uart_base); -} - -__attribute__((always_inline)) -static inline int serial_early_uninit(uint32_t uart_base) -{ - /* disable the UART by clearing UCEN */ - bfin_write(&pUART->gctl, 0); - - return 0; -} - -__attribute__((always_inline)) -static inline void serial_set_divisor(uint32_t uart_base, uint16_t divisor) -{ - /* Set DLAB in LCR to Access DLL and DLH */ - ACCESS_LATCH(); - SSYNC(); - - /* Program the divisor to get the baud rate we want */ - bfin_write(&pUART->dll, LOB(divisor)); - bfin_write(&pUART->dlh, HIB(divisor)); - SSYNC(); - - /* Clear DLAB in LCR to Access THR RBR IER */ - ACCESS_PORT_IER(); - SSYNC(); -} - -__attribute__((always_inline)) -static inline void serial_early_set_baud(uint32_t uart_base, uint32_t baud) -{ - /* Translate from baud into divisor in terms of SCLK. The - * weird multiplication is to make sure we over sample just - * a little rather than under sample the incoming signals. - */ -#if CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_BYPASS - uint16_t divisor = (early_get_uart_clk() + baud * 8) / (baud * 16) - - ANOMALY_05000230; -#else - uint16_t divisor = early_division(early_get_uart_clk() + (baud * 8), - baud * 16) - ANOMALY_05000230; -#endif - - serial_set_divisor(uart_base, divisor); -} - -__attribute__((always_inline)) -static inline void serial_early_put_div(uint16_t divisor) -{ - uint32_t uart_base = UART_BASE; - - /* Set DLAB in LCR to Access DLL and DLH */ - ACCESS_LATCH(); - SSYNC(); - - /* Program the divisor to get the baud rate we want */ - bfin_write(&pUART->dll, LOB(divisor)); - bfin_write(&pUART->dlh, HIB(divisor)); - SSYNC(); - - /* Clear DLAB in LCR to Access THR RBR IER */ - ACCESS_PORT_IER(); - SSYNC(); -} - -__attribute__((always_inline)) -static inline uint16_t serial_early_get_div(void) -{ - uint32_t uart_base = UART_BASE; - - /* Set DLAB in LCR to Access DLL and DLH */ - ACCESS_LATCH(); - SSYNC(); - - uint8_t dll = bfin_read(&pUART->dll); - uint8_t dlh = bfin_read(&pUART->dlh); - uint16_t divisor = (dlh << 8) | dll; - - /* Clear DLAB in LCR to Access THR RBR IER */ - ACCESS_PORT_IER(); - SSYNC(); - - return divisor; -} - -#endif - -#endif diff --git a/arch/blackfin/cpu/serial4.h b/arch/blackfin/cpu/serial4.h deleted file mode 100644 index 65483960b9..0000000000 --- a/arch/blackfin/cpu/serial4.h +++ /dev/null @@ -1,150 +0,0 @@ -/* - * serial.h - common serial defines for early debug and serial driver. - * any functions defined here must be always_inline since - * initcode cannot have function calls. - * - * Copyright (c) 2004-2011 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#ifndef __BFIN_CPU_SERIAL4_H__ -#define __BFIN_CPU_SERIAL4_H__ - -#include - -#ifndef __ASSEMBLY__ - -#include - -#define MMR_UART(n) _PASTE_UART(n, UART, REVID) -#define UART_BASE MMR_UART(CONFIG_UART_CONSOLE) - -struct bfin_mmr_serial { - u32 revid; - u32 control; - u32 status; - u32 scr; - u32 clock; - u32 emask; - u32 emaskst; - u32 emaskcl; - u32 rbr; - u32 thr; - u32 taip; - u32 tsr; - u32 rsr; - u32 txdiv_cnt; - u32 rxdiv_cnt; -}; -#define uart_lsr_t uint32_t -#define _lsr_read(p) bfin_read(&p->status) -#define _lsr_write(p, v) bfin_write(&p->status, v) - -__attribute__((always_inline)) -static inline void serial_early_do_mach_portmux(char port, int mux_mask, - int mux_func, int port_pin) -{ - switch (port) { - case 'D': - bfin_write_PORTD_MUX((bfin_read_PORTD_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTD_FER_SET(port_pin); - break; - case 'G': - bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & - ~mux_mask) | mux_func); - bfin_write_PORTG_FER_SET(port_pin); - break; - } -} - -__attribute__((always_inline)) -static inline void serial_early_do_portmux(void) -{ -#if defined(__ADSPBF60x__) - switch (CONFIG_UART_CONSOLE) { - case 0: - serial_early_do_mach_portmux('D', PORT_x_MUX_7_MASK, - PORT_x_MUX_7_FUNC_2, PD7); /* TX: D; mux 7; func 2; PD7 */ - serial_early_do_mach_portmux('D', PORT_x_MUX_8_MASK, - PORT_x_MUX_8_FUNC_2, PD8); /* RX: D; mux 8; func 2; PD8 */ - break; - case 1: - serial_early_do_mach_portmux('G', PORT_x_MUX_15_MASK, - PORT_x_MUX_15_FUNC_1, PG15); /* TX: G; mux 15; func 1; PG15 */ - serial_early_do_mach_portmux('G', PORT_x_MUX_14_MASK, - PORT_x_MUX_14_FUNC_1, PG14); /* RX: G; mux 14; func 1; PG14 */ - break; - } -#else -# if (P_UART(RX) & P_DEFINED) || (P_UART(TX) & P_DEFINED) -# error "missing portmux logic for UART" -# endif -#endif - SSYNC(); -} - -__attribute__((always_inline)) -static inline int uart_init(uint32_t uart_base) -{ - /* always enable UART to 8-bit mode */ - bfin_write(&pUART->control, UEN | UMOD_UART | WLS_8); - - SSYNC(); - - return 0; -} - -__attribute__((always_inline)) -static inline int serial_early_init(uint32_t uart_base) -{ - /* handle portmux crap on different Blackfins */ - serial_do_portmux(); - - return uart_init(uart_base); -} - -__attribute__((always_inline)) -static inline int serial_early_uninit(uint32_t uart_base) -{ - /* disable the UART by clearing UEN */ - bfin_write(&pUART->control, 0); - - return 0; -} - -__attribute__((always_inline)) -static inline void serial_set_divisor(uint32_t uart_base, uint16_t divisor) -{ - /* Program the divisor to get the baud rate we want */ - bfin_write(&pUART->clock, divisor); - SSYNC(); -} - -__attribute__((always_inline)) -static inline void serial_early_set_baud(uint32_t uart_base, uint32_t baud) -{ - uint16_t divisor = early_division(early_get_uart_clk(), baud * 16); - - /* Program the divisor to get the baud rate we want */ - serial_set_divisor(uart_base, divisor); -} - -__attribute__((always_inline)) -static inline void serial_early_put_div(uint32_t divisor) -{ - uint32_t uart_base = UART_BASE; - bfin_write(&pUART->clock, divisor); -} - -__attribute__((always_inline)) -static inline uint32_t serial_early_get_div(void) -{ - uint32_t uart_base = UART_BASE; - return bfin_read(&pUART->clock); -} - -#endif - -#endif diff --git a/arch/blackfin/cpu/start.S b/arch/blackfin/cpu/start.S index 1c6ae35275..da084a87c6 100644 --- a/arch/blackfin/cpu/start.S +++ b/arch/blackfin/cpu/start.S @@ -35,8 +35,7 @@ #include #include #include - -#include "serial.h" +#include /* It may seem odd that we make calls to functions even though we haven't * relocated ourselves yet out of {flash,ram,wherever}. This is OK because -- cgit v1.2.1