Siarhei Siamashka wrote:
> 725233: PLD instructions executed with PLD data forwarding
> enabled can result in a processor deadlock
>
> Signed-off-by: Siarhei Siamashka <[email protected]>
Please add a detailed comment on the errata.
Also looks like this jumping to ROM code.
Can this be done without a ROM code call ?
Tom
> ---
> cpu/arm_cortexa8/omap3/board.c | 6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/cpu/arm_cortexa8/omap3/board.c b/cpu/arm_cortexa8/omap3/board.c
> index 2aa69b3..7b78fa4 100644
> --- a/cpu/arm_cortexa8/omap3/board.c
> +++ b/cpu/arm_cortexa8/omap3/board.c
> @@ -146,6 +146,12 @@ void setup_auxcr()
> __asm__ __volatile__("orr r0, r0, #1 << 5");
> /* SMI instruction to call ROM Code API */
> __asm__ __volatile__(".word 0xE1600070");
> + /* Set PLD_FWD bit in L2AUXCR (Cortex-A8 erratum 725233 workaround) */
> + __asm__ __volatile__("mov r12, #0x2");
> + __asm__ __volatile__("mrc p15, 1, r0, c9, c0, 2");
> + __asm__ __volatile__("orr r0, r0, #1 << 27");
> + /* SMI instruction to call ROM Code API */
> + __asm__ __volatile__(".word 0xE1600070");
> __asm__ __volatile__("mov r0, %0":"=r"(i));
> __asm__ __volatile__("mov r12, %0":"=r"(j));
> }
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