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| author | Anatolij Gustschin <agust@denx.de> | 2008-02-25 20:54:04 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-03-02 21:34:55 +0100 |
| commit | 4fae35a53b3e958254d6574a1cc7e10811fc6726 (patch) | |
| tree | f994484fa71cbf7c8a4d95d9e4e51a3535db5a3c /cpu/ppc4xx/4xx_enet.c | |
| parent | 60ec654c5eb80d0fe0c38a3bd42140215bc06484 (diff) | |
| download | u-boot-imx-4fae35a53b3e958254d6574a1cc7e10811fc6726.zip u-boot-imx-4fae35a53b3e958254d6574a1cc7e10811fc6726.tar.gz u-boot-imx-4fae35a53b3e958254d6574a1cc7e10811fc6726.tar.bz2 | |
ppc4xx: Fix problem in 4xx_enet.c driver
U-Boot crashes in the net loop if CONFIG_4xx_DCACHE is
enabled. To reproduce the problem ensure that 'ethrotate'
environment variable isn't set to "no" and then run
"tftp 200000 not_existent_file".
This patch tries to fix the issue.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'cpu/ppc4xx/4xx_enet.c')
| -rw-r--r-- | cpu/ppc4xx/4xx_enet.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/cpu/ppc4xx/4xx_enet.c b/cpu/ppc4xx/4xx_enet.c index 44659ff..5ef1005 100644 --- a/cpu/ppc4xx/4xx_enet.c +++ b/cpu/ppc4xx/4xx_enet.c @@ -487,6 +487,9 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis) #endif u32 bd_cached; u32 bd_uncached = 0; +#ifdef CONFIG_4xx_DCACHE + static u32 last_used_ea = 0; +#endif EMAC_4XX_HW_PST hw_p = dev->priv; @@ -850,7 +853,12 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis) #ifdef CONFIG_4xx_DCACHE flush_dcache_range(bd_cached, bd_cached + MAL_ALLOC_SIZE); - bd_uncached = bis->bi_memsize; + if (!last_used_ea) + bd_uncached = bis->bi_memsize; + else + bd_uncached = last_used_ea + MAL_ALLOC_SIZE; + + last_used_ea = bd_uncached; program_tlb(bd_cached, bd_uncached, MAL_ALLOC_SIZE, TLB_WORD2_I_ENABLE); #else |