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83xx NAND boot: wait for LTESR[CC] 

At least some revisions of the 8313, and possibly other chips, do not
wait for all pages of the initial 4K NAND region to be loaded before
beginning execution; thus, we wait for it before branching out of the
first NAND page.

This fixes warm reset problems when booting from NAND on 8313erdb.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Lepcha Suchit 2008-10-16 13:38:00 -05:00 committed by Scott Wood
parent bf29e0ea0a
commit fa7b1c07e9
1 changed files with 12 additions and 0 deletions
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12
cpu/mpc83xx/start.S
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@ -167,6 +167,18 @@ boot_warm: /* time t 5 */
/* Initialise the E300 processor core */
/*------------------------------------------*/
#ifdef CONFIG_NAND_SPL
/* The FCM begins execution after only the first page
* is loaded. Wait for the rest before branching
* to another flash page.
*/
addi r7, r3, 0x50b0
1: dcbi 0, r7
lwz r6, 0(r7)
andi. r6, r6, 1
beq 1b
#endif
bl init_e300_core
#ifdef CFG_FLASHBOOT