Allow toggling the system debug state from the debug menu
in Rockbox, or by holding a button combo at boot, so that
an SWD/JTAG debugger can be attached to normal non-debug
builds without too much hassle.
Change-Id: Iee47ef916ade2e5ec1094a63c68e48f1b27b0bbb
While 50 MHz works for low activity and small amounts of
data, there are frequent CRC errors when handling larger
transfers. Increasing drive strength only makes it worse.
Everything seems stable at 25 MHz though.
Change-Id: I3471c490ab63b2302b21ee2fe601519ee5a40ce5
Both targets were part of the (presumably dead) Lyre project
and no longer build. The Mini2440 was much more complete than
the Lyre and doesn't seem terribly difficult to fix up to the
point where it at least builds, if someone still cares -- but
given it is a dev board in a box, it's unlikely it ever saw
much use.
Change-Id: I09745379d28db69ea9aaf77f0a62b049884260e1
Some purely mechanical fixes to get the normal build
working. Besides missing symbols all the plugins and
codecs build just fine.
Change-Id: I946ba39096a46be8308450bafd51a0995db8e323
It doesn't seem to have been functional ever and currently
doesn't build; eg. the last commit to the LCD driver added
a syntax error, and there's some duplicate functions between
mmu-armv6.S and system-pp502x.c. Doesn't seem worth the
effort to fix.
Change-Id: I82b5bec3ed9686f28aedbe283818af792b96daf4
These targets haven't seen any changes since 2008-09
have bitrotted to the point they don't compile anymore.
With only internal NAND flash for storage which doesn't
seem to have ever been accessible from Rockbox, they've
never been usable and there's probably not much point
keeping them around any more.
Change-Id: I2fc63da20682b439126672065ae013044cb2d1c4
It looks like the GDB stub only ever worked for the Archos
Recorder and iRiver IFP-7xx, neither of which are in-tree
any more.
Change-Id: If1910675b88b4707d26df9bc095818902af2d25b
Using a simple memcpy to a separate framebuffer prevents
objectionable levels of flickering caused by scanning out
the main framebuffer while it's modified between updates.
With optimized memcpy, copying the whole framebuffer takes
about 260us at maximum CPU+bus frequency. Using DMA would
likely be a bit faster and more power-efficient, but that
can be left as a future optimization.
Change-Id: Ia6dc36d797cdb7a5f6663078c0ecce661267bedf
Framebuffer access consumes a lot of SDRAM bandwidth.
Moving it to AXI SRAM should be a big improvement as
it's around 8x faster (2x clock speed, 4x bus width).
Also take advantage of explicitly assigning sections
to the special :NONE segment, which means they will
not appear in any ELF program header and thus aren't
visible to the bootloader. They can then overlap
areas used by the bootloader -- by the time they're
written, the bootloader will be long gone -- making
it easier to make efficient use of SRAM.
Change-Id: I2392fd23b17472cc08dc5fe4556f6def3cc186ed
Explicitly set 8-byte alignment as per the AAPCS, which
says the stack should be 8-byte aligned at a public ABI
boundary.
Change-Id: Ie60b664718119ea576e7c6b5efaac011eb907531
ie by only using HAVE_BOOTLOADER_USB_MODE, instead of blanket-enabling
USB_ENABLE_STORAGE for numerous SoC families
Change-Id: Ief433a1d693876072779e714883438c0012ba2e0
add second argument to usb_acknowledge.
it can be used for more appropriate connection tracking that does not
rely on timeout in the future.
Change-Id: I8a44366b7c7a1f944524c4ba8ecd6d9673746a65
Most of system_init() should only be performed once after
reset, and is not safe to re-run when the bootloader jumps
to the application.
Change-Id: I4d2e804ce4884da13b9167ddcda860ef3b5ba7d0
Use flash & AXI SRAM for the bootloader, ITCM/DTCM and
SDRAM for Rockbox. Hardly the most optimal use of SRAMs
but it's good enough to get started.
Fixes the Echo R1 app build, which wasn't fitting in
AXI SRAM.
Change-Id: I4f7e5f618d27b553e5ff8dec1d5c4c61ac9d8eb0
Normally the bootloader won't enable the LCD, but we
still want to call lcd_init() at startup to keep the
code simple.
Change-Id: I866ecd7c81b6c5e6acdd57f5d7680400df3f54f4
The clock helpers are only used for leaf clocks of single
peripherals, which don't benefit from reference counting.
Change-Id: Ica5685e7bc0fce621ae46f758f0ad0b1dcfb2789
Make systick setup less hardcoded, and create a public API
for use by targets, in preparation for moving system_init()
into target-specific code.
Improve the implementation of udelay to make it more robust
against timer wraparound.
Change-Id: I21bb8821cfd1d7e4049fac6e6a4548d80a4276f7
FIFO errors shouldn't be possible with hardware flow
control enabled. DMA errors shouldn't occur unless a
bad memory address was passed.
Don't bother checking for ITCM/DTCM in the transfer
setup and instead just wait for the IDMATE error; if
the RM0433 reference manual is to be believed then
SDMMC1 _only_ has access to AXI bus memories, and
checking for all invalid destinations would be very
verbose.
Change-Id: I2b22b56009933e16c5adde4d36b7a906cee57791
Hardware flow control prevents FIFO underruns/overruns
by stopping the bus clock if one would occur. This can
slow down transfers, but that's better than having data
transfer fail due to AXI/AHB bus contention.
Change-Id: I8696d3aff78c17dbbe85907160fa37fd4ee11e85
The following inline assembly in set_irq_level() turned out
to have incorrect constraints:
int newvalue = /* input parameter */;
int oldvalue;
asm volatile ("mrs %0, primask\n"
"msr primask, %1\n"
: "=r"(oldvalue) : "r"(newvalue));
leading to incorrect code generation for common cases like
disable_irq_save(), which compiles to:
mov r5, #1
mrs r5, primask
msr primask, r5
...which doesn't disable IRQs at all, since both of the
operands got assigned to the same register; the write of
'oldvalue' clobbers the 'newvalue' input before it's used.
Apparently GCC assumes that input operands are read before
output operands are written. One way to fix this is adding
the '&' constraint: "=&r"(oldvalue), but it's better to
break things down into separate, simpler asm statements
which GCC can figure out itself.
Also add compiler memory barriers where primask is modified
to ensure loads/stores aren't incorrectly moved outside of
critical sections.
While here, optimize disable_irq_save() a bit by using the
cpsid instruction, which avoids the extra "mov" and register
allocation needed by "msr primask".
Change-Id: Iac94a76db5bac399a1cf028da4241a0473259a46
While the binary firmware build succeeded, the 'make zip' process failed
because the script that put the default wps image together runs the
device config header through CPP while only looking into the
configuration header directory.
So move the imx233-config.h header out of the target/arm/imx233 and into
export/config where everything is copacetic.
Change-Id: I9914558a892f8ff7ad839818f0a5ef687cc7b997
mmc_sleepnow() was accidentally removed from the imx233 sdmmc code,
causing the sansa fuze+ build to fail.
Change-Id: I935f7f4fe99e7353a84dc26e81d85ee55afa0de3
Note that USB current limiting is more or less wishful
thinking; only the charge current is limited, but the
system could easily draw more than 100 mA by itself.
Change-Id: I1083b015f0abea5a39a602ca8d7b142d3613b46b
storage_sleepnow() is the one that is actually implemented
by storage drivers. storage_sleep() sends a Q_STORAGE_SLEEP
event to the storage thread, which will normally end up
calling the driver's sleepnow() function.
Change-Id: Ib6523073348431dcc75c0f10ef99060c6960efd8
For commit-type operations it's useful to be able to pass
unaligned addresses, so round the address/size to ensure
all cache lines in the address range are hit.
Change-Id: Ibb23050ecf11b6ef6ab1dd517990a68ef62ecfa9
Enable high speed USB for the Echo R1. Includes reasonably
complete support for full speed USB on the STM32H743 since
that was necessary to debug why it wasn't working at first
(which turned out to be a bug in memcpy, not a hardware or
driver issue).
Change-Id: Ie713195b22ba88c79b9b0d6eb289cb9ccd2763c2
This supply is shared by the USB PHY and the audio codec,
so it needs to be reference counted to allow them to be
powered up & down independently (and not just leave the
1V8 regulator enabled all the time).
Change-Id: Ib99b41c2a94b9f0c378153b33c6f91b4370ee998
All non-simulator and non-hostfs targets are required to implement storage_get_info() since 04dc052a
Change-Id: I87febd12e101797d9cbbffc0e2e46efc2dace9da
Enable pullups on SDMMC CMD/DATx lines and set output
speed to medium. Using HIGH and VERYHIGH speeds seems
to cause data corruption, with frequent CRC failures.
Change-Id: I732d19e03a2a857453755b68b6749497eafaef70
