![Mike Frysinger](/assets/img/avatar_default.png)
Parts that have on-chip L2 SRAM cannot safely utilize writeback caching mode, so reject any attempts to use it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
|
|
* Do some checking to make sure things are OK
|
|
*
|
|
* Copyright 2007-2009 Analog Devices Inc.
|
|
*
|
|
* Licensed under the GPL-2 or later.
|
|
*/
|
|
|
|
#include <asm/fixed_code.h>
|
|
#include <mach/anomaly.h>
|
|
#include <asm/clocks.h>
|
|
|
|
#ifdef CONFIG_BFIN_KERNEL_CLOCK
|
|
|
|
# if (CONFIG_VCO_HZ > CONFIG_MAX_VCO_HZ)
|
|
# error "VCO selected is more than maximum value. Please change the VCO multipler"
|
|
# endif
|
|
|
|
# if (CONFIG_SCLK_HZ > CONFIG_MAX_SCLK_HZ)
|
|
# error "Sclk value selected is more than maximum. Please select a proper value for SCLK multiplier"
|
|
# endif
|
|
|
|
# if (CONFIG_SCLK_HZ < CONFIG_MIN_SCLK_HZ)
|
|
# error "Sclk value selected is less than minimum. Please select a proper value for SCLK multiplier"
|
|
# endif
|
|
|
|
# if (ANOMALY_05000273) && (CONFIG_SCLK_HZ * 2 > CONFIG_CCLK_HZ)
|
|
# error "ANOMALY 05000273, please make sure CCLK is at least 2x SCLK"
|
|
# endif
|
|
|
|
# if (CONFIG_SCLK_HZ > CONFIG_CCLK_HZ) && (CONFIG_SCLK_HZ != CONFIG_CLKIN_HZ) && (CONFIG_CCLK_HZ != CONFIG_CLKIN_HZ)
|
|
# error "Please select sclk less than cclk"
|
|
# endif
|
|
|
|
#endif /* CONFIG_BFIN_KERNEL_CLOCK */
|
|
|
|
#if CONFIG_BOOT_LOAD < FIXED_CODE_END
|
|
# error "The kernel load address must be after the fixed code section"
|
|
#endif
|
|
|
|
#if (CONFIG_BOOT_LOAD & 0x3)
|
|
# error "The kernel load address must be 4 byte aligned"
|
|
#endif
|
|
|
|
/* The entire kernel must be able to make a 24bit pcrel call to start of L1 */
|
|
#if ((0xffffffff - L1_CODE_START + 1) + CONFIG_BOOT_LOAD) > 0x1000000
|
|
# error "The kernel load address is too high; keep it below 10meg for safety"
|
|
#endif
|
|
|
|
#if ANOMALY_05000448
|
|
# error You are using a part with anomaly 05000448, this issue causes random memory read/write failures - that means random crashes.
|
|
#endif
|
|
|
|
/* if 220 exists, can not set External Memory WB and L2 not_cached, either External Memory not_cached and L2 WB */
|
|
#if ANOMALY_05000220 && \
|
|
((defined(CONFIG_BFIN_EXTMEM_WRITEBACK) && !defined(CONFIG_BFIN_L2_DCACHEABLE)) || \
|
|
(!defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) && defined(CONFIG_BFIN_L2_WRITEBACK)))
|
|
# error You are exposing Anomaly 220 in this config, either config L2 as Write Through, or make External Memory WB.
|
|
#endif
|
|
|
|
#if ANOMALY_05000475 && \
|
|
(defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK))
|
|
# error "Anomaly 475 does not allow you to use Write Back cache with L2 or External Memory"
|
|
#endif
|