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FIX: good solution for enabling 512kb memory, instead of a #define. It reads the chipId and detects memsize based on it.

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iceman1001 2017-08-22 11:55:00 +02:00
commit 6598e12752
1 changed files with 15 additions and 12 deletions
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13
bootrom/bootrom.c
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@ -80,7 +80,7 @@ static void ConfigClocks(void)
} }
static void Fatal(void) { static void Fatal(void) {
for(;;); for(;;) {};
} }
void UsbPacketReceived(uint8_t *packet, int len) { void UsbPacketReceived(uint8_t *packet, int len) {
@ -272,10 +272,14 @@ void BootROM(void)
LED_B_OFF(); LED_B_OFF();
LED_A_OFF(); LED_A_OFF();
// Set the first 256kb memory flashspeed
AT91C_BASE_EFC0->EFC_FMR = AT91C_MC_FWS_1FWS | MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48); AT91C_BASE_EFC0->EFC_FMR = AT91C_MC_FWS_1FWS | MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48);
#ifdef HAS_512_FLASH
// 9 = 256, 10+ is 512kb
uint8_t id = ( *(AT91C_DBGU_CIDR) & 0xF00) >> 8;
if ( id > 9 )
AT91C_BASE_EFC1->EFC_FMR = AT91C_MC_FWS_1FWS | MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48); AT91C_BASE_EFC1->EFC_FMR = AT91C_MC_FWS_1FWS | MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48);
#endif
// Initialize all system clocks // Initialize all system clocks
ConfigClocks(); ConfigClocks();
@ -287,9 +291,8 @@ void BootROM(void)
case AT91C_RSTC_RSTTYP_SOFTWARE: case AT91C_RSTC_RSTTYP_SOFTWARE:
case AT91C_RSTC_RSTTYP_USER: case AT91C_RSTC_RSTTYP_USER:
/* In these cases the common_area in RAM should be ok, retain it if it's there */ /* In these cases the common_area in RAM should be ok, retain it if it's there */
if(common_area.magic == COMMON_AREA_MAGIC && common_area.version == 1) { if(common_area.magic == COMMON_AREA_MAGIC && common_area.version == 1)
common_area_present = 1; common_area_present = 1;
}
break; break;
default: /* Otherwise, initialize it from scratch */ default: /* Otherwise, initialize it from scratch */
break; break;