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| author | Alexander Stein <alexanders83@web.de> | 2015-07-24 09:22:13 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-08-12 20:47:42 -0400 |
| commit | 4342557fad308dd4ca8f9c2e74ea4f2dbddd5685 (patch) | |
| tree | 6c7b10c7dd18d461dcd6fbc2449eae3644c9bb77 /arch/arm/mach-bcm283x/mbox.c | |
| parent | 927753aeb93f100d73b7ed034238633df41891bc (diff) | |
| download | u-boot-imx-4342557fad308dd4ca8f9c2e74ea4f2dbddd5685.zip u-boot-imx-4342557fad308dd4ca8f9c2e74ea4f2dbddd5685.tar.gz u-boot-imx-4342557fad308dd4ca8f9c2e74ea4f2dbddd5685.tar.bz2 | |
arm/mach-bcm283x/mbox: Flush and invalidate dcache when using fw mailbox
When using dcache the setup data for the mailbox must be actually written
into memory before calling into firmware. Thus flush and invalidate the
memory.
Signed-off-by: Alexander Stein <alexanders83@web.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'arch/arm/mach-bcm283x/mbox.c')
| -rw-r--r-- | arch/arm/mach-bcm283x/mbox.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-bcm283x/mbox.c b/arch/arm/mach-bcm283x/mbox.c index 1af9be7..311bd8f 100644 --- a/arch/arm/mach-bcm283x/mbox.c +++ b/arch/arm/mach-bcm283x/mbox.c @@ -111,9 +111,18 @@ int bcm2835_mbox_call_prop(u32 chan, struct bcm2835_mbox_hdr *buffer) dump_buf(buffer); #endif + flush_dcache_range((unsigned long)buffer, + (unsigned long)((void *)buffer + + roundup(buffer->buf_size, ARCH_DMA_MINALIGN))); + ret = bcm2835_mbox_call_raw(chan, phys_to_bus((u32)buffer), &rbuffer); if (ret) return ret; + + invalidate_dcache_range((unsigned long)buffer, + (unsigned long)((void *)buffer + + roundup(buffer->buf_size, ARCH_DMA_MINALIGN))); + if (rbuffer != phys_to_bus((u32)buffer)) { printf("mbox: Response buffer mismatch\n"); return -1; |