/* * 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_flush_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