[PATCH 0/8] SUNIV SPI NAND support in SPL

[Icenowy Zheng]

在 2023-06-05星期一的 15:03 -0600，Sam Edwards写道：
> Hey hey Icenowy,
> 
> On 10/13/22 21:05, Icenowy Zheng wrote:
> > This patchset tries to extend SPI-based boot code in sunxi SPL to
> > support SPI NAND, following the same principle with current SPI NOR
> > code
> > (mimicking the behavior of sunxi BROM).
> 
> Thank you for your work on this patchset; it works great on T113 as 
> well! Note that I have had to apply an extra patch to resolve a
> bootloop 
> of "Unknown boot source 4" (find the patch below).
> 
> Also, since on both SUNXI and SUNIV the SPL knows whether it came
> from 
> NOR or NAND, perhaps it would be better to break apart 
> BOOT_DEVICE_SPI/spl_spi_load_image into specific NOR and NAND
> variants, 
> as opposed to the current try-NAND-then-NOR approach?

Well it depends on whether all SoCs differienate between SPI NOR and
SPI NAND.

Do you have any suggestion on as many chips models as possible boards
with SPI NAND?

> 
> Cheers (and thanks again),
> Sam
> 
> --
> 
> diff --git a/arch/arm/include/asm/arch-sunxi/spl.h 
> b/arch/arm/include/asm/arch-sunxi/spl.h
> index 14944a20ea..703aa70a49 100644
> --- a/arch/arm/include/asm/arch-sunxi/spl.h
> +++ b/arch/arm/include/asm/arch-sunxi/spl.h
> @@ -12,10 +12,11 @@
>   #define SPL_ADDR              CONFIG_SUNXI_SRAM_ADDRESS
> 
>   /* The low 8-bits of the 'boot_media' field in the SPL header */
> -#define SUNXI_BOOTED_FROM_MMC0 0
> -#define SUNXI_BOOTED_FROM_NAND 1
> -#define SUNXI_BOOTED_FROM_MMC2 2
> -#define SUNXI_BOOTED_FROM_SPI  3
> +#define SUNXI_BOOTED_FROM_MMC0         0
> +#define SUNXI_BOOTED_FROM_NAND         1
> +#define SUNXI_BOOTED_FROM_MMC2         2
> +#define SUNXI_BOOTED_FROM_SPI          3
> +#define SUNXI_BOOTED_FROM_SPI_NAND     4
>   #define SUNXI_BOOTED_FROM_MMC0_HIGH   0x10
>   #define SUNXI_BOOTED_FROM_MMC2_HIGH   0x12
> 
> diff --git a/arch/arm/mach-sunxi/board.c b/arch/arm/mach-
> sunxi/board.c
> index a48f5aaa05..9bbd0753e6 100644
> --- a/arch/arm/mach-sunxi/board.c
> +++ b/arch/arm/mach-sunxi/board.c
> @@ -298,6 +298,7 @@ uint32_t sunxi_get_boot_device(void)
>         case SUNXI_BOOTED_FROM_MMC2_HIGH:
>                 return BOOT_DEVICE_MMC2;
>         case SUNXI_BOOTED_FROM_SPI:
> +       case SUNXI_BOOTED_FROM_SPI_NAND:
>                 return BOOT_DEVICE_SPI;
>         }
>