diff options
Diffstat (limited to 'arch/blackfin/include/asm/config-pre.h')
| -rw-r--r-- | arch/blackfin/include/asm/config-pre.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/config-pre.h b/arch/blackfin/include/asm/config-pre.h new file mode 100644 index 0000000..4531519 --- /dev/null +++ b/arch/blackfin/include/asm/config-pre.h @@ -0,0 +1,80 @@ +/* + * 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 + +/* There is no Blackfin/NetBSD port */ +#undef CONFIG_BOOTM_NETBSD + +/* We rarely use interrupts, so favor throughput over latency */ +#define CONFIG_BFIN_INS_LOWOVERHEAD + +#endif |