mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 14:14:01 +08:00
6c18c91b3a
This patch adds initial support for the Hawkboard-L138 system It is under the machine name "omapl138_hawkboard". This system is based on the da850 davinci CPU architecture. Information on these system may be found at http://www.hawkboard.org. Basic support for the UART console is included in this patch. It's tested with latest Angstrom File Systems like ramdisk from http://alturl.com/imb45. Signed-off-by: Victor Rodriguez <victor.rodriguez@sasken.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/*
|
|
* Serial port stubs for kernel decompress status messages
|
|
*
|
|
* Initially based on:
|
|
* arch/arm/plat-omap/include/mach/uncompress.h
|
|
*
|
|
* Original copyrights follow.
|
|
*
|
|
* 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 <mach/serial.h>
|
|
|
|
static u32 *uart;
|
|
static u32 *uart_info = (u32 *)(DAVINCI_UART_INFO);
|
|
|
|
/* PORT_16C550A, in polled non-fifo mode */
|
|
static void putc(char c)
|
|
{
|
|
while (!(uart[UART_LSR] & UART_LSR_THRE))
|
|
barrier();
|
|
uart[UART_TX] = c;
|
|
}
|
|
|
|
static inline void flush(void)
|
|
{
|
|
while (!(uart[UART_LSR] & UART_LSR_THRE))
|
|
barrier();
|
|
}
|
|
|
|
static inline void set_uart_info(u32 phys, void * __iomem virt)
|
|
{
|
|
uart = (u32 *)phys;
|
|
uart_info[0] = phys;
|
|
uart_info[1] = (u32)virt;
|
|
}
|
|
|
|
#define _DEBUG_LL_ENTRY(machine, phys, virt) \
|
|
if (machine_is_##machine()) { \
|
|
set_uart_info(phys, virt); \
|
|
break; \
|
|
}
|
|
|
|
#define DEBUG_LL_DAVINCI(machine, port) \
|
|
_DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE, \
|
|
IO_ADDRESS(DAVINCI_UART##port##_BASE))
|
|
|
|
#define DEBUG_LL_DA8XX(machine, port) \
|
|
_DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE, \
|
|
IO_ADDRESS(DA8XX_UART##port##_BASE))
|
|
|
|
#define DEBUG_LL_TNETV107X(machine, port) \
|
|
_DEBUG_LL_ENTRY(machine, TNETV107X_UART##port##_BASE, \
|
|
TNETV107X_UART##port##_VIRT)
|
|
|
|
static inline void __arch_decomp_setup(unsigned long arch_id)
|
|
{
|
|
/*
|
|
* 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 {
|
|
/* Davinci boards */
|
|
DEBUG_LL_DAVINCI(davinci_evm, 0);
|
|
DEBUG_LL_DAVINCI(sffsdr, 0);
|
|
DEBUG_LL_DAVINCI(neuros_osd2, 0);
|
|
DEBUG_LL_DAVINCI(davinci_dm355_evm, 0);
|
|
DEBUG_LL_DAVINCI(dm355_leopard, 0);
|
|
DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0);
|
|
DEBUG_LL_DAVINCI(davinci_dm365_evm, 0);
|
|
|
|
/* DA8xx boards */
|
|
DEBUG_LL_DA8XX(davinci_da830_evm, 2);
|
|
DEBUG_LL_DA8XX(davinci_da850_evm, 2);
|
|
DEBUG_LL_DA8XX(mityomapl138, 1);
|
|
DEBUG_LL_DA8XX(omapl138_hawkboard, 2);
|
|
|
|
/* TNETV107x boards */
|
|
DEBUG_LL_TNETV107X(tnetv107x, 1);
|
|
} while (0);
|
|
}
|
|
|
|
#define arch_decomp_setup() __arch_decomp_setup(arch_id)
|
|
#define arch_decomp_wdog()
|