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This commit is contained in:
Gregory Nutt 2013-07-30 12:07:51 -06:00
parent c4c222ca3a
commit b2da68028e
1 changed files with 2 additions and 9 deletions
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11
configs/sama5d3x-ek/src/nor_main.c
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@ -129,24 +129,17 @@ int nor_main(int argc, char *argv)
(void)irqdisable();
/* Set remap state 0. This is done late in the boot sequence. Any
* exceptions taken before this point in time will be handled by the
* ROM code, not by the NuttX interrupt since which was, up to this
* point, uninitialized.
/* Set remap state 1.
*
* Boot state: ROM is seen at address 0x00000000
* Remap State 0: SRAM is seen at address 0x00000000 (through AHB slave
* interface) instead of ROM.
* Remap State 1: HEBI is seen at address 0x00000000 (through AHB slave
* interface) instead of ROM for external boot.
*
* Here we are assuming that vectors reside in the lower end of ISRAM.
* Hmmm... this probably does not matter since we will map a page to
* address 0x0000:0000 in that case anyway.
*/
putreg32(MATRIX_MRCR_RCB0, SAM_MATRIX_MRCR); /* Enable remap */
putreg32(AXIMX_REMAP_REMAP0, SAM_AXIMX_REMAP); /* Remap SRAM */
putreg32(AXIMX_REMAP_REMAP1, SAM_AXIMX_REMAP); /* Remap SRAM */
/* Disable the caches and the MMU. Disabling the MMU should be safe here
* because there is a 1-to-1 identity mapping between the physical and