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/*
* config-pre.h - common defines for Blackfin boards in config.h
*
* Copyright (c) 2007-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_BLACKFIN_CONFIG_PRE_H__
#define __ASM_BLACKFIN_CONFIG_PRE_H__
/* Misc helper functions */
#define XMK_STR(x) #x
#define MK_STR(x) XMK_STR(x)
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
/* Bootmode defines -- your config needs to select this via CONFIG_BFIN_BOOT_MODE.
* Depending on your cpu, some of these may not be valid, check your HRM.
* The actual values here are meaningless as long as they're unique.
*/
#define BFIN_BOOT_BYPASS 1 /* bypass bootrom */
#define BFIN_BOOT_PARA 2 /* boot ldr out of parallel flash */
#define BFIN_BOOT_SPI_MASTER 3 /* boot ldr out of serial flash */
#define BFIN_BOOT_SPI_SLAVE 4 /* boot ldr as spi slave */
#define BFIN_BOOT_TWI_MASTER 5 /* boot ldr over twi device */
#define BFIN_BOOT_TWI_SLAVE 6 /* boot ldr over twi slave */
#define BFIN_BOOT_UART 7 /* boot ldr over uart */
#define BFIN_BOOT_IDLE 8 /* do nothing, just idle */
#define BFIN_BOOT_FIFO 9 /* boot ldr out of FIFO */
#define BFIN_BOOT_MEM 10 /* boot ldr out of memory (warmboot) */
#define BFIN_BOOT_16HOST_DMA 11 /* boot ldr from 16-bit host dma */
#define BFIN_BOOT_8HOST_DMA 12 /* boot ldr from 8-bit host dma */
#define BFIN_BOOT_NAND 13 /* boot ldr from nand flash */
#ifndef __ASSEMBLY__
static inline const char *get_bfin_boot_mode(int bfin_boot)
{
switch (bfin_boot) {
case BFIN_BOOT_BYPASS: return "bypass";
case BFIN_BOOT_PARA: return "parallel flash";
case BFIN_BOOT_SPI_MASTER: return "spi flash";
case BFIN_BOOT_SPI_SLAVE: return "spi slave";
case BFIN_BOOT_TWI_MASTER: return "i2c flash";
case BFIN_BOOT_TWI_SLAVE: return "i2c slave";
case BFIN_BOOT_UART: return "uart";
case BFIN_BOOT_IDLE: return "idle";
case BFIN_BOOT_FIFO: return "fifo";
case BFIN_BOOT_MEM: return "memory";
case BFIN_BOOT_16HOST_DMA: return "16bit dma";
case BFIN_BOOT_8HOST_DMA: return "8bit dma";
case BFIN_BOOT_NAND: return "nand flash";
default: return "INVALID";
}
}
#endif
/* Most bootroms allow for EVT1 redirection */
#if ((defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__)) \
&& __SILICON_REVISION__ < 3) || defined(__ADSPBF561__)
# undef CONFIG_BFIN_BOOTROM_USES_EVT1
#else
# define CONFIG_BFIN_BOOTROM_USES_EVT1
#endif
/* Define the default SPI CS used when booting out of SPI */
#if defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__) || \
defined(__ADSPBF538__) || defined(__ADSPBF539__) || defined(__ADSPBF561__) || \
defined(__ADSPBF51x__)
# define BFIN_BOOT_SPI_SSEL 2
#else
# define BFIN_BOOT_SPI_SSEL 1
#endif
/* We rarely use interrupts, so favor throughput over latency */
#define CONFIG_BFIN_INS_LOWOVERHEAD
#endif
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