Commit graph

14 commits

Author SHA1 Message Date
Rafaël Carré
7a9033179f as3525*: make udelay() be a simple busy loop
it achieves all the requirements, work fine on c200v2, and is much simpler

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26933 a1c6a512-1295-4272-9138-f99709370657
2010-06-18 19:14:08 +00:00
Rafaël Carré
fd715fa95c as3525*: enable MMU in bootloader
Reserve 1MB of DRAM for loading rockbox and use the rest as BSS
Write sdram setup in assembler and move it to a separate file, together
with MMU init code

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26926 a1c6a512-1295-4272-9138-f99709370657
2010-06-18 17:33:51 +00:00
Rafaël Carré
6b46cc08ed as3525: hide our UNCACHED_ADDR from usb_storage.c
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26178 a1c6a512-1295-4272-9138-f99709370657
2010-05-19 18:13:06 +00:00
Thomas Martitz
3adac47c61 Fix wrong udelay logic that made it be way off.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25770 a1c6a512-1295-4272-9138-f99709370657
2010-05-02 02:30:06 +00:00
Rafaël Carré
621cf62702 as3525v2: fix udelay()
detect wraps so we don't miss the value we were waiting for
fix audio stuttering on fuzev2

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25740 a1c6a512-1295-4272-9138-f99709370657
2010-04-27 18:18:30 +00:00
Thomas Martitz
249aae587a FS#11172 - Fuzev2: Read the scrollwheel scrollwheel via IRQ
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25736 a1c6a512-1295-4272-9138-f99709370657
2010-04-27 10:11:52 +00:00
Thomas Martitz
845af676f8 as3525(v2): Add a somewhat inaccurate udelay (-0.5/+1.0µs). It should work good for some huge delays.
Use it in fuzev2 to improve some big delays (correct the biggest one to actually wait for the fifo to empty), and use it in the sd drivers.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25734 a1c6a512-1295-4272-9138-f99709370657
2010-04-27 09:34:29 +00:00
Tobias Diedrich
ea907b31ae Detect C200v2 variant by reading A7, use A5 or A7 to control backlight and buttonlight depending on the result.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25499 a1c6a512-1295-4272-9138-f99709370657
2010-04-06 18:32:47 +00:00
Michael Giacomelli
7131ddb105 ARM922T's icache isn't coherent with its dcache, so we need to ensure that its flushed before changing codecs. Playback takes care of this for us, but only if we define cache coherency functions. Do that. Also, add a comment explaining that MMU functions need to be included so that other people don't spend hours chasing them in the future.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21647 a1c6a512-1295-4272-9138-f99709370657
2009-07-05 01:17:25 +00:00
Rafaël Carré
e2f165c088 Sansa AMS: make the UNCACHED_ADDR macro work for any type of pointer, and only use pointers with it, not arrays
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21230 a1c6a512-1295-4272-9138-f99709370657
2009-06-09 00:51:30 +00:00
Rafaël Carré
f504153857 FS#10048 : enable MMU and data cache on Sansa AMS to give a major speed up
- cache IRAM and DRAM
- map IRAM just next to DRAM to remove the need for -mlong-calls and reduce binsize
- tweak delays in Fuze button code
- tweak delays in Clip button code (down button sometimes doesn't respond anyway : an alternate driver is being worked on)

Before reporting any problem, please check your filesystem or format your player from the OF

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21228 a1c6a512-1295-4272-9138-f99709370657
2009-06-08 23:05:33 +00:00
Rafaël Carré
45711ac286 Sansa AMS: centralize clock settings in clock-target.h
Reorder system_init() to initialize peripherals not only in bootloader
Use a 65MHz PCLK (and memclk) which will be needed for realtime decoding

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19330 a1c6a512-1295-4272-9138-f99709370657
2008-12-04 20:04:31 +00:00
Rafaël Carré
0b6d65b09e Sansa AMS: Use a valid PLL setting (248MHz aka maximum fclk)
Fix lcd drivers which stopped working after changing the PLL.
Move set_cpu_frequency() to a place where it is actually used.
Remove enable_irq() call already done by the bootloader

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19276 a1c6a512-1295-4272-9138-f99709370657
2008-11-30 16:36:32 +00:00
Rafaël Carré
97e907538a Sansa AMS: implement set_cpu_frequency()
Use a 24MHz peripheral clock instead of 64MHz for battery life

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19234 a1c6a512-1295-4272-9138-f99709370657
2008-11-26 16:46:12 +00:00
Renamed from firmware/target/arm/as3525/sansa-clip/system-target.h (Browse further)