This patch enabled support for the Sharp QVGA LCD panel of the MX21ADS board.
Signed-off-by: Ivo Clarysse <ivo.clarysse@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch allows using the i.MX (LCDC) framebuffer driver on boards
using an i.MX21 SoC.
Signed-off-by: Ivo Clarysse <ivo.clarysse@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For some weird reason this fixes nand boot on i.MX21. Since
interrupts are globally disabled it doesn't hurt on other
SoCs.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Also, do not allow to continue barebox after returning from the
application since we don't know anything about the state we are in.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We do not need to use memcpy32 in read_buf/write_buf because
in these functions we only access SDRAM and not the internal SRAM
buffer.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When reading a page from nand prefetch the next page afterwards to
keep the controller busy. This way we can improve sequential reading
from NAND which is the common case for barebox.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The internal SRAM buffer of the i.MX NAND controller does not
allow byte accesses. We use the memcpy32 function to handle this.
If we have assembler optimized string functions we can do better
because they won't do byte accesses when source and target are word
aligned.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
v2: Do not exit from all scripts but only the current one
This fixes the case:
barebox:/ cat /test
if [ 0 = 0 ]; then
exit 1
fi
barebox:/ /test
barebox:/ echo $?
0
barebox:/
Also, remove code to not allow exit from main shell. The for(;;) loop
in common/startup.c will bring us back anyway.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
I found the wrong symlink and activated the spell-checker while I was here.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This allows the iomux to reconfigure these pins which are opendrain at
power on and thus can't drive the LCD.
Signed-off-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Barebox crashes during startup, because the SDRAM controller has not been
initialized.
Signed-off-by: Jaccon Bastiaansen <jaccon.bastiaansen@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The PLL setup occasionally fails when the setup code runs
from SDRAM, so copy a little assembler helper function to
SRAM and execute it there.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
edb93xx SDRAM initialization: Issue a precharge all command before forcing the
precharge of all SDRAM banks. Write to the SDRAM in order to force a precharge,
reading causes the edb93xx boards to hang
Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch updates the definitions of the __raw_read and __raw_write
functions so that "sparse" doesn't complain.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Ivo Clarysse
Sascha Hauer
Uwe Kleine-König
Márton Németh
Wolfram Sang
Eric Benard
Juergen Beisert
Jaccon Bastiaansen
Matthias Kaehlcke
Marc Kleine-Budde