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Diffstat (limited to 'include/asm-blackfin/blackfin_local.h')
| -rw-r--r-- | include/asm-blackfin/blackfin_local.h | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/include/asm-blackfin/blackfin_local.h b/include/asm-blackfin/blackfin_local.h new file mode 100644 index 0000000..6f0e662 --- /dev/null +++ b/include/asm-blackfin/blackfin_local.h @@ -0,0 +1,215 @@ +/* + * U-boot - blackfin_local.h + * + * Copyright (c) 2005-2007 Analog Devices Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#ifndef __BLACKFIN_LOCAL_H__ +#define __BLACKFIN_LOCAL_H__ + +#define LO(con32) ((con32) & 0xFFFF) +#define lo(con32) ((con32) & 0xFFFF) +#define HI(con32) (((con32) >> 16) & 0xFFFF) +#define hi(con32) (((con32) >> 16) & 0xFFFF) + +#define OFFSET_(x) (x & 0x0000FFFF) +#define MK_BMSK_(x) (1 << x) + +/* Ideally this should be USEC not MSEC, but the USEC multiplication + * likes to overflow 32bit quantities which is all our assembler + * currently supports ;( + */ +#define USEC_PER_MSEC 1000 +#define MSEC_PER_SEC 1000 +#define BFIN_SCLK (100000000) +#define SCLK_TO_MSEC(sclk) ((MSEC_PER_SEC * ((sclk) / USEC_PER_MSEC)) / (BFIN_SCLK / USEC_PER_MSEC)) +#define MSEC_TO_SCLK(msec) ((((BFIN_SCLK / USEC_PER_MSEC) * (msec)) / MSEC_PER_SEC) * USEC_PER_MSEC) + +#include <asm/linkage.h> + +#ifndef __ASSEMBLY__ +# ifdef SHARED_RESOURCES +# include <asm/shared_resources.h> +# endif + +# include <linux/types.h> + +extern u_long get_sclk(void); + +# define bfin_revid() (*pCHIPID >> 28) + +extern void blackfin_icache_flush_range(const void *, const void *); +extern void blackfin_dcache_flush_range(const void *, const void *); +extern void blackfin_dcache_invalidate_range(const void *, const void *); + +/* Use DMA to move data from on chip to external memory. While this is + * required for only L1 instruction (it is not directly readable by the + * core via data loads), it isn't a huge performance issue for other + * regions (it's probably even faster than core load/stores). However, + * the DMA engine does not have access to the L1 scratchpad, and we + * cannot use DMA inside of the MMR space. + */ +# define addr_bfin_on_chip_mem(addr) \ + (((unsigned long)(addr) >= 0xef000000 && (unsigned long)addr < SYSMMR_BASE) && \ + !((unsigned long)(addr) >= L1_SRAM_SCRATCH && \ + (unsigned long)(addr) < L1_SRAM_SCRATCH_END)) + +# include <asm/system.h> + +#if ANOMALY_05000198 +# define NOP_PAD_ANOMALY_05000198 "nop;" +#else +# define NOP_PAD_ANOMALY_05000198 +#endif + +#define bfin_read8(addr) ({ \ + uint8_t __v; \ + __asm__ __volatile__( \ + NOP_PAD_ANOMALY_05000198 \ + "%0 = b[%1] (z);" \ + : "=d" (__v) \ + : "a" (addr) \ + ); \ + __v; }) + +#define bfin_read16(addr) ({ \ + uint16_t __v; \ + __asm__ __volatile__( \ + NOP_PAD_ANOMALY_05000198 \ + "%0 = w[%1] (z);" \ + : "=d" (__v) \ + : "a" (addr) \ + ); \ + __v; }) + +#define bfin_read32(addr) ({ \ + uint32_t __v; \ + __asm__ __volatile__( \ + NOP_PAD_ANOMALY_05000198 \ + "%0 = [%1];" \ + : "=d" (__v) \ + : "a" (addr) \ + ); \ + __v; }) + +#define bfin_readPTR(addr) bfin_read32(addr) + +#define bfin_write8(addr, val) \ + __asm__ __volatile__( \ + NOP_PAD_ANOMALY_05000198 \ + "b[%0] = %1;" \ + : \ + : "a" (addr), "d" (val) \ + : "memory" \ + ) + +#define bfin_write16(addr, val) \ + __asm__ __volatile__( \ + NOP_PAD_ANOMALY_05000198 \ + "w[%0] = %1;" \ + : \ + : "a" (addr), "d" (val) \ + : "memory" \ + ) + +#define bfin_write32(addr, val) \ + __asm__ __volatile__( \ + NOP_PAD_ANOMALY_05000198 \ + "[%0] = %1;" \ + : \ + : "a" (addr), "d" (val) \ + : "memory" \ + ) + +#define bfin_writePTR(addr, val) bfin_write32(addr, val) + +/* SSYNC implementation for C file */ +static inline void SSYNC(void) +{ + int _tmp; + if (ANOMALY_05000312) + __asm__ __volatile__( + "cli %0;" + "nop;" + "nop;" + "ssync;" + "sti %0;" + : "=d" (_tmp) + ); + else if (ANOMALY_05000244) + __asm__ __volatile__( + "nop;" + "nop;" + "nop;" + "ssync;" + ); + else + __asm__ __volatile__("ssync;"); +} + +/* CSYNC implementation for C file */ +static inline void CSYNC(void) +{ + int _tmp; + if (ANOMALY_05000312) + __asm__ __volatile__( + "cli %0;" + "nop;" + "nop;" + "csync;" + "sti %0;" + : "=d" (_tmp) + ); + else if (ANOMALY_05000244) + __asm__ __volatile__( + "nop;" + "nop;" + "nop;" + "csync;" + ); + else + __asm__ __volatile__("csync;"); +} + +#else /* __ASSEMBLY__ */ + +/* SSYNC & CSYNC implementations for assembly files */ + +#define ssync(x) SSYNC(x) +#define csync(x) CSYNC(x) + +#if ANOMALY_05000312 +#define SSYNC(scratch) cli scratch; nop; nop; SSYNC; sti scratch; +#define CSYNC(scratch) cli scratch; nop; nop; CSYNC; sti scratch; + +#elif ANOMALY_05000244 +#define SSYNC(scratch) nop; nop; nop; SSYNC; +#define CSYNC(scratch) nop; nop; nop; CSYNC; + +#else +#define SSYNC(scratch) SSYNC; +#define CSYNC(scratch) CSYNC; + +#endif /* ANOMALY_05000312 & ANOMALY_05000244 handling */ + +#endif /* __ASSEMBLY__ */ + +#endif |