[PATCH V3 3/5] ARM: tegra: decouple uncompress.h and debug-macro.S
Peter De Schrijver
pdeschrijver at nvidia.com
Mon Oct 22 04:18:30 EDT 2012
> +
> +#define checkuart(rp, rv, lhu, bit, uart) \
> + /* Load address of CLK_RST register */ \
> + movw rp, #TEGRA_CLK_RST_DEVICES_##lhu & 0xffff ; \
> + movt rp, #TEGRA_CLK_RST_DEVICES_##lhu >> 16 ; \
> + /* Load value from CLK_RST register */ \
> + ldr rp, [rp, #0] ; \
> + /* Test UART's reset bit */ \
> + tst rp, #(1 << bit) ; \
> + /* If set, can't use UART; jump to save no UART */ \
> + bne 90f ; \
> + /* Load address of CLK_OUT_ENB register */ \
> + movw rp, #TEGRA_CLK_OUT_ENB_##lhu & 0xffff ; \
> + movt rp, #TEGRA_CLK_OUT_ENB_##lhu >> 16 ; \
> + /* Load value from CLK_OUT_ENB register */ \
> + ldr rp, [rp, #0] ; \
> + /* Test UART's clock enable bit */ \
> + tst rp, #(1 << bit) ; \
> + /* If clear, can't use UART; jump to save no UART */ \
> + beq 90f ; \
> + /* Passed all tests, load address of UART registers */ \
> + movw rp, #TEGRA_UART##uart##_BASE & 0xffff ; \
> + movt rp, #TEGRA_UART##uart##_BASE >> 16 ; \
> + /* Jump to save UART address */ \
> + b 91f
>
Maybe make this a subroutine?
Cheers,
Peter.
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