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powerpc: fix 8xx and 82xx type-punning warnings with GCC 4.7

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C99's strict aliasing rules are insane to use in low-level code such as a
bootloader, but as Wolfgang has rejected -fno-strict-aliasing in the
past, add a union so that 16-bit accesses can be performed.

Compile-tested only.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Scott Wood
2013-05-17 20:01:54 -05:00
committed by Wolfgang Denk
parent e1208c2fe5
commit a166fbca20
11 changed files with 39 additions and 23 deletions
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3
examples/standalone/mem_to_mem_idma2intr.c
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@@ -309,7 +309,8 @@ int idma_init (void)
memaddr = dpalloc (sizeof (pram_idma_t), 64);
*(volatile ushort *) &immap->im_dprambase[PROFF_IDMA2_BASE] = memaddr;
*(volatile u16 *)&immap->im_dprambase16
[PROFF_IDMA2_BASE / sizeof(u16)] = memaddr;
piptr = (volatile pram_idma_t *) ((uint) (immap) + memaddr);
piptr->pi_resv1 = 0; /* manual says: clear it */