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 <[EMAIL PROTECTED]>
---
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
--
1.5.3.3
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