This was spotted while playing with qemu-jz:
1) rockbox reads TECR and TESR which are described as write-only
registers. Datasheet doesn't mention what happens if they are
readed. Apparently this doesn't have fatal side effects.
It comes down to two defines from jz4740.h
__tcu_stop_counter(n) and __tcu_start_counter(n) which use
read-modify-write sequence.
2) rockbox accesses out of bound offset 0xd4 in DMA memspace.
It comes from dis_irq() in system-jz4740.c. NUM_DMA is 6 but
DMA channels are 0-5 so (irq <= IRQ_DMA_0 + NUM_DMA)) bound
check is wrong.
This are *NOT* tested on device.
Change-Id: I29dff6a4f828030877b7d50fbcc98866478b9e3d
Reviewed-on: http://gerrit.rockbox.org/338
Reviewed-by: Bertrik Sikken <bertrik@sikken.nl>
Tested-by: Purling Nayuki <cyq.yzfl@gmail.com>
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
Note : SH has TIMER_FREQ defined to CPU_FREQ, so any code wanting it must include #config.h before #cpu.h
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21560 a1c6a512-1295-4272-9138-f99709370657
* Add YUV support
* Clean up LCD driver a bit and speed it up
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20730 a1c6a512-1295-4272-9138-f99709370657
* Fix USB issues + add DMA support (doesn't work fully)
* Make exception handler a bit more descriptive
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20091 a1c6a512-1295-4272-9138-f99709370657
* Add missing mmu-mips.h change
Onda VX747:
* Correct USB power handling
* Improve NAND handling
* Other minor fixes
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19921 a1c6a512-1295-4272-9138-f99709370657
* Implement lcd_flip()
* Add support for multiple banks in NAND driver
* Add basic I²C driver (untested)
* Get audio back working
* Add power driver
* Other minor fixes and cleanups
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19863 a1c6a512-1295-4272-9138-f99709370657
* Get USB working (it isn't good at writing support though)
* Clean up NAND & SD a bit
* Other comments/fixes
Ingenic Jz4740/MIPS:
* Split MMU from system
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19815 a1c6a512-1295-4272-9138-f99709370657
* Clean up header file a bit
* Add information about the IPU
* Add original license
* Add Ingenic Media Extension Instruction Set header file
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19621 a1c6a512-1295-4272-9138-f99709370657
* kill TABs in jz4740.h
* clean up LCD
* make CONFIG_ORIENTATION work in both ways
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18286 a1c6a512-1295-4272-9138-f99709370657
