forked from Minki/linux
0c8219f030
Define arch_decomp_setup() the same way as some other architectures do. Use arch_id to configure the debug uart based on the machine_is by storing it into the uart scratchpad register for DEBUG_LL code to use. Signed-off-by: Tony Lindgren <tony@atomide.com>
174 lines
4.7 KiB
C
174 lines
4.7 KiB
C
/*
|
|
* arch/arm/plat-omap/include/mach/uncompress.h
|
|
*
|
|
* Serial port stubs for kernel decompress status messages
|
|
*
|
|
* Initially based on:
|
|
* linux-2.4.15-rmk1-dsplinux1.6/arch/arm/plat-omap/include/mach1510/uncompress.h
|
|
* Copyright (C) 2000 RidgeRun, Inc.
|
|
* Author: Greg Lonnon <glonnon@ridgerun.com>
|
|
*
|
|
* Rewritten by:
|
|
* Author: <source@mvista.com>
|
|
* 2004 (c) MontaVista Software, Inc.
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public License
|
|
* version 2. This program is licensed "as is" without any warranty of any
|
|
* kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/serial_reg.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
|
|
#include <plat/serial.h>
|
|
|
|
static volatile u8 *uart1_base;
|
|
static int uart1_shift;
|
|
|
|
static volatile u8 *uart_base;
|
|
static int uart_shift;
|
|
|
|
/*
|
|
* Store the DEBUG_LL uart number into UART1 scratchpad register.
|
|
* See also debug-macro.S, and serial.c for related code.
|
|
*
|
|
* Please note that we currently assume that:
|
|
* - UART1 clocks are enabled for register access
|
|
* - UART1 scratchpad register can be used
|
|
*/
|
|
static void set_uart1_scratchpad(unsigned char port)
|
|
{
|
|
uart1_base[UART_SCR << uart1_shift] = port;
|
|
}
|
|
|
|
static void putc(int c)
|
|
{
|
|
if (!uart_base)
|
|
return;
|
|
|
|
while (!(uart_base[UART_LSR << uart_shift] & UART_LSR_THRE))
|
|
barrier();
|
|
uart_base[UART_TX << uart_shift] = c;
|
|
}
|
|
|
|
static inline void flush(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Macros to configure UART1 and debug UART
|
|
*/
|
|
#define _DEBUG_LL_ENTRY(mach, uart1_phys, uart1_shft, \
|
|
dbg_uart, dbg_shft, dbg_id) \
|
|
if (machine_is_##mach()) { \
|
|
uart1_base = (volatile u8 *)(uart1_phys); \
|
|
uart1_shift = (uart1_shft); \
|
|
uart_base = (volatile u8 *)(dbg_uart); \
|
|
uart_shift = (dbg_shft); \
|
|
port = (dbg_id); \
|
|
set_uart1_scratchpad(port); \
|
|
break; \
|
|
}
|
|
|
|
#define DEBUG_LL_OMAP7XX(p, mach) \
|
|
_DEBUG_LL_ENTRY(mach, OMAP1_UART1_BASE, OMAP7XX_PORT_SHIFT, \
|
|
OMAP1_UART##p##_BASE, OMAP7XX_PORT_SHIFT, OMAP1UART##p)
|
|
|
|
#define DEBUG_LL_OMAP1(p, mach) \
|
|
_DEBUG_LL_ENTRY(mach, OMAP1_UART1_BASE, OMAP_PORT_SHIFT, \
|
|
OMAP1_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP1UART##p)
|
|
|
|
#define DEBUG_LL_OMAP2(p, mach) \
|
|
_DEBUG_LL_ENTRY(mach, OMAP2_UART1_BASE, OMAP_PORT_SHIFT, \
|
|
OMAP2_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP2UART##p)
|
|
|
|
#define DEBUG_LL_OMAP3(p, mach) \
|
|
_DEBUG_LL_ENTRY(mach, OMAP3_UART1_BASE, OMAP_PORT_SHIFT, \
|
|
OMAP3_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP3UART##p)
|
|
|
|
#define DEBUG_LL_OMAP4(p, mach) \
|
|
_DEBUG_LL_ENTRY(mach, OMAP4_UART1_BASE, OMAP_PORT_SHIFT, \
|
|
OMAP4_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP4UART##p)
|
|
|
|
/* Zoom2/3 shift is different for UART1 and external port */
|
|
#define DEBUG_LL_ZOOM(mach) \
|
|
_DEBUG_LL_ENTRY(mach, OMAP2_UART1_BASE, OMAP_PORT_SHIFT, \
|
|
ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART)
|
|
|
|
static inline void __arch_decomp_setup(unsigned long arch_id)
|
|
{
|
|
int port = 0;
|
|
|
|
/*
|
|
* Initialize the port based on the machine ID from the bootloader.
|
|
* Note that we're using macros here instead of switch statement
|
|
* as machine_is functions are optimized out for the boards that
|
|
* are not selected.
|
|
*/
|
|
do {
|
|
/* omap7xx/8xx based boards using UART1 with shift 0 */
|
|
DEBUG_LL_OMAP7XX(1, herald);
|
|
DEBUG_LL_OMAP7XX(1, omap_perseus2);
|
|
|
|
/* omap15xx/16xx based boards using UART1 */
|
|
DEBUG_LL_OMAP1(1, ams_delta);
|
|
DEBUG_LL_OMAP1(1, nokia770);
|
|
DEBUG_LL_OMAP1(1, omap_h2);
|
|
DEBUG_LL_OMAP1(1, omap_h3);
|
|
DEBUG_LL_OMAP1(1, omap_innovator);
|
|
DEBUG_LL_OMAP1(1, omap_osk);
|
|
DEBUG_LL_OMAP1(1, omap_palmte);
|
|
DEBUG_LL_OMAP1(1, omap_palmz71);
|
|
|
|
/* omap15xx/16xx based boards using UART2 */
|
|
DEBUG_LL_OMAP1(2, omap_palmtt);
|
|
|
|
/* omap15xx/16xx based boards using UART3 */
|
|
DEBUG_LL_OMAP1(3, sx1);
|
|
|
|
/* omap2 based boards using UART1 */
|
|
DEBUG_LL_OMAP2(1, omap2evm);
|
|
DEBUG_LL_OMAP2(1, omap_2430sdp);
|
|
DEBUG_LL_OMAP2(1, omap_apollon);
|
|
DEBUG_LL_OMAP2(1, omap_h4);
|
|
|
|
/* omap2 based boards using UART3 */
|
|
DEBUG_LL_OMAP2(3, nokia_n800);
|
|
DEBUG_LL_OMAP2(3, nokia_n810);
|
|
DEBUG_LL_OMAP2(3, nokia_n810_wimax);
|
|
|
|
/* omap3 based boards using UART1 */
|
|
DEBUG_LL_OMAP2(1, omap3evm);
|
|
DEBUG_LL_OMAP3(1, omap_3430sdp);
|
|
DEBUG_LL_OMAP3(1, omap_3630sdp);
|
|
|
|
/* omap3 based boards using UART3 */
|
|
DEBUG_LL_OMAP3(3, cm_t35);
|
|
DEBUG_LL_OMAP3(3, igep0020);
|
|
DEBUG_LL_OMAP3(3, nokia_rx51);
|
|
DEBUG_LL_OMAP3(3, omap3517evm);
|
|
DEBUG_LL_OMAP3(3, omap3_beagle);
|
|
DEBUG_LL_OMAP3(3, omap3_pandora);
|
|
DEBUG_LL_OMAP3(3, omap_ldp);
|
|
DEBUG_LL_OMAP3(3, overo);
|
|
DEBUG_LL_OMAP3(3, touchbook);
|
|
|
|
/* omap4 based boards using UART3 */
|
|
DEBUG_LL_OMAP4(3, omap_4430sdp);
|
|
|
|
/* zoom2/3 external uart */
|
|
DEBUG_LL_ZOOM(omap_zoom2);
|
|
DEBUG_LL_ZOOM(omap_zoom3);
|
|
|
|
} while (0);
|
|
}
|
|
|
|
#define arch_decomp_setup() __arch_decomp_setup(arch_id)
|
|
|
|
/*
|
|
* nothing to do
|
|
*/
|
|
#define arch_decomp_wdog()
|