mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
909878fd3f
Part of the mini Blackfin ABI with operating systems is that they can use 0x4f0-0x4f8 to pass log buffers to/from bootloaders. So add support to U-Boot for reading the log buffer. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
218 lines
5 KiB
C
218 lines
5 KiB
C
/*
|
|
* 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)
|
|
|
|
#define L1_CACHE_SHIFT 5
|
|
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
|
|
|
|
#include <asm/linkage.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
# ifdef SHARED_RESOURCES
|
|
# include <asm/shared_resources.h>
|
|
# endif
|
|
|
|
# include <linux/types.h>
|
|
|
|
extern u_long get_vco(void);
|
|
extern u_long get_cclk(void);
|
|
extern u_long get_sclk(void);
|
|
|
|
# define bfin_revid() (*pCHIPID >> 28)
|
|
|
|
extern bool bfin_os_log_check(void);
|
|
extern void bfin_os_log_dump(void);
|
|
|
|
extern void blackfin_icache_flush_range(const void *, const void *);
|
|
extern void blackfin_dcache_flush_range(const void *, const void *);
|
|
extern void blackfin_icache_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. The L1 instruction
|
|
* regions can only be accessed via DMA, so if the address in question is in
|
|
* that region, make sure we attempt to DMA indirectly.
|
|
*/
|
|
# define addr_bfin_on_chip_mem(addr) (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000)
|
|
|
|
# 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
|