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* Blackfin: handle new anomalies with resetMike Frysinger2009-01-28-5/+15
| | | | | | Workaround fun new anomalies related to software reset of the processor. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: pass RETX to LinuxMike Frysinger2009-01-28-0/+6
| | | | | | | Make sure we save the value of RETX at power on and then pass it on to the kernel so that it can nicely debug a "double-fault-caused-a-reset" crash. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clarify relocation comment during initMike Frysinger2009-01-28-3/+7
| | | | | | | People often ask questions about the init process and when things go from flash to relocated base, so clarify the comments a bit. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: just set SP register directly during initMike Frysinger2009-01-28-3/+2
| | | | | | | No need to set the SP register indirectly to the configured value when it can be set directly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: add portmuxing for UARTs on the BF51xMike Frysinger2009-01-28-1/+10
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: respect CONFIG_CLKIN_HALFMike Frysinger2009-01-28-1/+1
| | | | | | | | As pointed out by Ivan Koryakovskiy, the initialization code was not actually respecting the CONFIG_CLKIN_HALF option when configuring the PLL_CTL register. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: use common memcpy routine during initMike Frysinger2009-01-28-21/+11
| | | | | | | Rather than using a local custom memcpy function, just call the existing optimized Blackfin version. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: overhaul i2c driverMike Frysinger2009-01-28-429/+1
| | | | | | | | | | | The current Blackfin i2c driver does not work properly with certain devices due to it breaking up transfers incorrectly. This is a rewrite of the driver and relocates it to the newer place in the source tree. Also remove duplicated I2C speed defines in Blackfin board configs and disable I2C slave address usage since it isn't implemented. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix dcache handling when doing dma memcpy'sMike Frysinger2009-01-28-2/+2
| | | | | | | | Our dcache invalidate function doesn't just invalidate, it also flushes. So rename the function accordingly and fix the dma_memcpy() function so it doesn't inadvertently corrupt the data destination. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: minimize time cache is turned off when replacing cplb entriesMike Frysinger2009-01-28-22/+9
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* i2c: merge all i2c_reg_read() and i2c_reg_write() into inline functionsTimur Tabi2008-12-15-16/+0
| | | | | | | | | | All implementations of the functions i2c_reg_read() and i2c_reg_write() are identical. We can save space and simplify the code by converting these functions into inlines and putting them in i2c.h. Signed-off-by: Timur Tabi <timur@freescale.com> Acked-By: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Blackfin: fix up UART status bit handlingMike Frysinger2008-10-23-12/+60
| | | | | | | | Some Blackfin UARTs are read-to-clear while others are write-to-clear. This can cause problems when we poll the LSR and then later try and handle any errors detected. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: small cpu init optimization while setting interrupt maskMike Frysinger2008-10-23-5/+2
| | | | | | | Use the sti instruction to set the initial interrupt mask rather than banging on the core IMASK MMR to save both space and time. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: set initial stack correctly according to Blackfin ABIMike Frysinger2008-10-23-3/+3
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: make baud calculation more accurateMike Frysinger2008-10-23-4/+4
| | | | | | | | We should use the algorithm in the Linux kernel so that the UART divisor calculation is more accurate. It also fixes problems on some picky UARTs that have sampling anomalies. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: decode hwerrcause/excause when crashingMike Frysinger2008-10-23-2/+40
| | | | | | Having to decode hwerrcause/excause values is a pain, so automate it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix register dump messagesMike Frysinger2008-10-23-1/+5
| | | | | | Make sure we report RETI/IPEND correctly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: don't bother displaying reboot msg when crashingMike Frysinger2008-10-23-5/+1
| | | | | | | The hang function already tells you to reboot, so no point in showing it twice. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: enable support for nested interruptsMike Frysinger2008-10-23-4/+10
| | | | | | | During cpu init, make sure we initialize the CEC properly so that interrupts can fire and be handled while U-Boot is running. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: drop unused cache flush codeMike Frysinger2008-10-23-231/+1
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: unify cache handling codeMike Frysinger2008-10-23-35/+0
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: only enable hardware error irq by defaultMike Frysinger2008-10-23-3/+2
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD2008-10-18-7/+7
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Big white-space cleanup.Wolfgang Denk2008-05-21-3/+3
| | | | | | | | | | | This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Blackfin: unify cpu and boot modesMike Frysinger2008-03-30-0/+2684
All of the duplicated code for Blackfin processors and boot modes have been unified. After all, the core is the same for all processors, just the peripheral set differs (which gets handled in the drivers). Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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