[U-Boot] [PATCH 0/2] Add support for MINI2440 (s3c2440)
Marek Vasut
marex at denx.de
Mon Apr 30 01:26:51 CEST 2012
Dear Gabriel Huau,
> From the last time, I removed the patch about the PLL initialization
> because it's board specific. I added a new patch for s3c440 gpio driver.
> Now in the board file we have no more magic bloat.
Even without looking, I sense flaws ... I sense fluctuations in the patch-force
;-)
So let's get to it :-)
>
> >> +/*
> >> + * When booting from NAND, it is impossible to access the lowest
> >> addresses + * due to the SteppingStone being in the way. Luckily the
> >> NOR doesn't really + * care about the highest 16 bits of address, so we
> >> set the controlers + * registers to go and poke over there, instead.
> >> + */
> >> +#define PHYS_FLASH_1 0x0
> >> +#define CONFIG_SYS_FLASH_BASE 0x0
> >
> >Urghh... this sounds very much like a serious design issue?
>
> About this point, I ported it from the old version uboot as well. It may
> need some investigation, but I remember it was a big problem with this
> board. In the case of a NAND boot, we don't have access to NOR because the
> SteppingStone (SRAM) is mapped at the same range.
We discussed it, didn't we ? The SRAM is only mapped at different place. So drop
the support for nand booting altogether and re-add it when you have it fixed.
>
> Gabriel Huau (2):
> Add GPIO Driver and IOMUX definition for S3C2440
> Add support for MINI2440 (s3c2440).
>
> MAINTAINERS | 4 +
> arch/arm/include/asm/arch-s3c24x0/gpio.h | 183 +++++++++++++++++++++++++
> arch/arm/include/asm/arch-s3c24x0/iomux.h | 197
> +++++++++++++++++++++++++++ board/friendlyarm/mini2440/Makefile |
> 44 ++++++
> board/friendlyarm/mini2440/mini2440.c | 135 +++++++++++++++++++
> board/friendlyarm/mini2440/mini2440.h | 144 ++++++++++++++++++++
> boards.cfg | 1 +
> doc/README.mini2440 | 28 ++++
> drivers/gpio/Makefile | 1 +
> drivers/gpio/s3c2440_gpio.c | 74 ++++++++++
> include/configs/mini2440.h | 209
> +++++++++++++++++++++++++++++ 11 files changed, 1020 insertions(+)
> create mode 100644 arch/arm/include/asm/arch-s3c24x0/gpio.h
> create mode 100644 arch/arm/include/asm/arch-s3c24x0/iomux.h
> create mode 100644 board/friendlyarm/mini2440/Makefile
> create mode 100644 board/friendlyarm/mini2440/mini2440.c
> create mode 100644 board/friendlyarm/mini2440/mini2440.h
> create mode 100644 doc/README.mini2440
> create mode 100644 drivers/gpio/s3c2440_gpio.c
> create mode 100644 include/configs/mini2440.h
Best regards,
Marek Vasut
More information about the U-Boot
mailing list