On Sat, 25 Sep 2010 14:51:22 +0200 Anatolij Gustschin agust@denx.de wrote:
From: Timur Tabi timur@freescale.com
On the Freescale P1022, the DIU and the LBC share address pins, which means that when the DIU is active (e.g. the console is on the DVI display), NOR flash cannot be accessed. So we use the weak accessor function feature of the CFI flash code to temporarily switch the pin mux from DIU to LBC whenever we want to read or write flash. This has a significant performance penalty, but it's the only way to make it work.
This change allows the 'saveenv' command to work when the video display is enabled. Erasing flash and writing to flash (with the 'cp' command) works, but reading from flash (with the 'md' and 'cp' commands) does not. Also, while flash is being written, the video display will be blank.
Signed-off-by: Timur Tabi timur@freescale.com Signed-off-by: Anatolij Gustschin agust@denx.de
v4:
- rebased on current u-boot-video/next
board/freescale/p1022ds/diu.c | 208 +++++++++++++++++++++++++++++++++++++++-- include/configs/P1022DS.h | 6 + 2 files changed, 207 insertions(+), 7 deletions(-)
Applied to u-boot-video/next.
Anatolij