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simplified MMU initialization

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removed (apparently unneeded) MMU TLBs
added source file templates for SPI dma routines
This commit is contained in:
Markus Fröschle
2013-07-28 07:19:57 +00:00
parent 074f0176fc
commit 884f9eedd4
13 changed files with 663 additions and 569 deletions
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25
sources/sysinit.c
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@@ -30,6 +30,7 @@
#include "cache.h"
#include "sysinit.h"
#include "bas_printf.h"
#include "bas_string.h"
#include "bas_types.h"
#include "wait.h"
@@ -796,10 +797,10 @@ extern uint8_t _FIRETOS[];
#define FIRETOS ((uint32_t)_FIRETOS) /* where FireTOS is stored in flash */
extern uint8_t _BAS_LMA[];
#define BAS_LMA ((uint32_t)_BAS_LMA) /* where the BaS is stored in flash */
#define BAS_LMA (&_BAS_LMA[0]) /* where the BaS is stored in flash */
extern uint8_t _BAS_IN_RAM[];
#define BAS_IN_RAM ((uint32_t)_BAS_IN_RAM) /* where the BaS is run in RAM */
#define BAS_IN_RAM (&_BAS_IN_RAM[0]) /* where the BaS is run in RAM */
extern uint8_t _BAS_SIZE[];
#define BAS_SIZE ((uint32_t)_BAS_SIZE) /* size of the BaS, in bytes */
@@ -808,11 +809,6 @@ extern uint8_t _FASTRAM_END[];
#define FASTRAM_END ((uint32_t)_FASTRAM_END)
void initialize_hardware(void) {
/* used in copy loop */
uint32_t *src; /* src address to read from flash */
uint32_t *end; /* end address to read from flash */
uint32_t *dst; /* destination address to copy to */
/* Test for FireTOS switch: DIP switch #5 up */
if (!(DIP_SWITCH & (1 << 6))) {
/* Minimal hardware initialization */
@@ -923,22 +919,11 @@ void initialize_hardware(void) {
//video_1280_1024();
init_ac97();
/* copy the BaS .data and .bss contained in flash to its final location */
src = (uint32_t *) BAS_LMA;
end = (uint32_t *) (BAS_LMA + BAS_SIZE);
dst = (uint32_t *) BAS_IN_RAM;
xprintf("copying BaS data (%p - %p) to RAM (%p)\r\n", src, end, dst);
xprintf("copying BaS data (%p - %p) to RAM (%p)\r\n", BAS_LMA, BAS_LMA + BAS_SIZE, BAS_IN_RAM);
/* The linker script will ensure that the Bas size
* is a multiple of the following.
*/
while (src < end)
{
*dst++ = *src++;
*dst++ = *src++;
*dst++ = *src++;
*dst++ = *src++;
}
memcpy((void *) BAS_IN_RAM, BAS_LMA, BAS_SIZE);
xprintf("finished.\r\n");
/* we have copied a code area, so flush the caches */