Moses,
I found out why BIOS_Start blows up...
I knew what I was doing was correct but did not seem to make sense.
I called CP15MMUDisable (); to disable the MMU. I guess that SYS/BIOS requires the MMU.
If I call CP15MMUEnable (); prior to BIOS_Start then it no longer dies (starts Idle task...).
That is good news. Note, that requirement is not documented (and may even be a bug).
But, since I am bringing up a board I really don't want the MMU in the way. I want to be able to open up access to ALL the registers including (I2C, UARTs, etc). Like I did in my EnableTheWorld() function without having exceptions.
Where is the best place to open the ranges like the gel file (but in C).
This was in the gel file.
OnTargetConnect()
{
GEL_MapOff();
GEL_MapReset();
GEL_MapAddStr(0x00020000, 0, 0x20000000, "R", 0); // Boot ROM
GEL_MapAddStr(0x40000000, 0, 0x0002C000, "R", 0); // Boot ROM (also at 0x20000)
GEL_MapAddStr(0x402F0400, 0, 0x0000FC00, "R|W", 0); // SRAM Internal
GEL_MapAddStr(0x40300000, 0, 0x00010000, "R|W", 0); // OCMC-RAM
GEL_MapAddStr(0x44000000, 0, 0x00400000, "R|W", 0); // L3F CFG Regs
GEL_MapAddStr(0x44800000, 0, 0x00400000, "R|W", 0); // L3S CFG Regs
GEL_MapAddStr(0x44C00000, 0, 0x00400000, "R|W", 0); // L4_WKUP
GEL_MapAddStr(0x46000000, 0, 0x00400000, "R|W", 0); // McASP0 Data
GEL_MapAddStr(0x46400000, 0, 0x00400000, "R|W", 0); // McASP1 Data
GEL_MapAddStr(0x47400000, 0, 0x00005000, "R|W", 0); // USB0/1
GEL_MapAddStr(0x47810000, 0, 0x00010000, "R|W", 0); // MMCHS2
GEL_MapAddStr(0x48000000, 0, 0x01000000, "R|W", 0); // L4 PER
GEL_MapAddStr(0x49000000, 0, 0x00B00000, "R|W", 0); // EDMA
GEL_MapAddStr(0x4A000000, 0, 0x01000000, "R|W", 0); // L4_FAST
GEL_MapAddStr(0x4C000000, 0, 0x01000000, "R|W", 0); // EMIF
GEL_MapAddStr(0x50000000, 0, 0x01000000, "R|W", 0); // GPMC Regs
GEL_MapAddStr(0x56000000, 0, 0x01000000, "R|W", 0); // SGX530
GEL_MapAddStr(0x80000000, 0, 0x40000000, "R|W", 0); // 256MB DDR3 external memory
GEL_MapOn();
AM335xStartState();
AM3358_SK_Initialization();
Disable_Watchdog();
}
Thanks at least some of the mystery is solved,
Aaron