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 <sonic.zhang@analog.com>

8 files changed, 4 insertions, 419 deletions

diff --git a/arch/blackfin/cpu/Makefile b/arch/blackfin/cpu/Makefile
index 145f63e..929fc8b 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 d841f64..218f57e 100644
--- a/arch/blackfin/cpu/cpu.c
+++ b/arch/blackfin/cpu/cpu.c
@@ -16,9 +16,9 @@
 #include <asm/mach-common/bits/core.h>
 #include <asm/mach-common/bits/ebiu.h>
 #include <asm/mach-common/bits/trace.h>
+#include <asm/serial.h>
 
 #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 078209f..5fc06e1 100644
--- a/arch/blackfin/cpu/initcode.c
+++ b/arch/blackfin/cpu/initcode.c
@@ -16,10 +16,9 @@
 #include <asm/mach-common/bits/watchdog.h>
 #include <asm/mach-common/bits/bootrom.h>
 #include <asm/mach-common/bits/core.h>
+#include <asm/serial.h>
 
-#define BUG() while (1) { asm volatile("emuexcpt;"); }
-
-#include "serial.h"
+#define BUG() while (1) asm volatile("emuexcpt;");
 
 #ifndef __ADSPBF60x__
 #include <asm/mach-common/bits/ebiu.h>
diff --git a/arch/blackfin/cpu/serial.c b/arch/blackfin/cpu/serial.c
deleted file mode 100644
index c453a03..0000000
--- 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 <bas@buyways.nl>,
- *			BuyWays B.V. (www.buyways.nl)
- *
- * Based heavily on:
- * blkfinserial.c: Serial driver for BlackFin DSP internal USRTs.
- * Copyright(c) 2003	Metrowerks	<mwaddel@metrowerks.com>
- * Copyright(c)	2001	Tony Z. Kou	<tonyko@arcturusnetworks.com>
- * Copyright(c)	2001-2002 Arcturus Networks Inc. <www.arcturusnetworks.com>
- *
- * Based on code from 68328 version serial driver imlpementation which was:
- * Copyright (C) 1995       David S. Miller    <davem@caip.rutgers.edu>
- * Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
- * Copyright (C) 1998, 1999 D. Jeff Dionne     <jeff@uclinux.org>
- * Copyright (C) 1999       Vladimir Gurevich  <vgurevic@cisco.com>
- *
- * (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 <common.h>
-#include <post.h>
-#include <watchdog.h>
-#include <serial.h>
-#include <linux/compiler.h>
-#include <asm/blackfin.h>
-
-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/start.S b/arch/blackfin/cpu/start.S
index 1c6ae35..da084a8 100644
--- a/arch/blackfin/cpu/start.S
+++ b/arch/blackfin/cpu/start.S
@@ -35,8 +35,7 @@
 #include <asm/mach-common/bits/watchdog.h>
 #include <asm/mach-common/bits/core.h>
 #include <asm/mach-common/bits/pll.h>
-
-#include "serial.h"
+#include <asm/serial.h>
 
 /* 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
diff --git a/arch/blackfin/cpu/serial.h b/arch/blackfin/include/asm/serial.h
index 87a337d..87a337d 100644
--- a/arch/blackfin/cpu/serial.h
+++ b/arch/blackfin/include/asm/serial.h
diff --git a/arch/blackfin/cpu/serial1.h b/arch/blackfin/include/asm/serial1.h
index 467d381..467d381 100644
--- a/arch/blackfin/cpu/serial1.h
+++ b/arch/blackfin/include/asm/serial1.h
diff --git a/arch/blackfin/cpu/serial4.h b/arch/blackfin/include/asm/serial4.h
index 6548396..6548396 100644
--- a/arch/blackfin/cpu/serial4.h
+++ b/arch/blackfin/include/asm/serial4.h