Comtrol eCos - Manual (Page 191)

Chapter 5. Installation and Testing
-w < time>
Wait time in seconds before starting kernel
-c "params"
Parameters passed to kernel
< addr>
Kernel entry point, defaulting to the entry point of the last image loaded
The parameter string is stored in the on-chip memory at location 0x8C001000, and is prefixed by “cmdline:” if it
was supplied.
Memory Maps
RedBoot sets up the following memory map on the ASB2305 board.
NOTE: The regions mapped between 0x80000000-0x9FFFFFFF are cached by the CPU. However, all those
regions can be accessed uncached by adding 0x20000000 to the address.
Physical Address Range Description
----------------------- -----------
0x80000000 - 0x9FFFFFFF Cached Region
0x80000000 - 0x81FFFFFF Boot PROM
0x84000000 - 0x85FFFFFF System Flash
0x86000000 - 0x86007FFF 64Kbit Sys Config EEPROM
0x86F90000 - 0x86F90003 4x 7-segment LEDs
0x86FA0000 - 0x86FA0003 Software DIP Switches
0x86FB0000 - 0x86FB001F PC16550 Debug Serial Port
0x8C000000 - 0x8FFFFFFF On-Chip Memory (repeated 16Kb SRAM)
0x90000000 - 0x93FFFFFF SDRAM
0x98000000 - 0x9BFFFFFF Paged PCI Memory Space (64Mb)
0x9C000000 - 0x9DFFFFFF PCI Local SRAM (32Mb)
0x9E000000 - 0x9E03FFFF PCI I/O Space
0x9E040000 - 0x9E0400FF AM33-PCI Bridge Registers
0x9FFFFFF4 - 0x9FFFFFF7 PCI Memory Page Register
0x9FFFFFF8 - 0x9FFFFFFF PCI Config Registers
0xA0000000 - 0xBFFFFFFF Uncached Mirror Region
0xC0000000 - 0xDFFFFFFF CPU Control Registers
The ASB2305 HAL makes use of the on-chip memory in the following way:
0x8C000000 - 0x8C0000FF hal_vsr_table
0x8C000100 - 0x8C0001FF hal_virtual_vector_table
0x8C001000 - Linux command line (RedBoot exec command)
- 0x8C003FFF Emergency DoubleFault Exception Stack
Currently the CPU’s interrupt table lies at the beginning of the RedBoot image, which must therefore be aligned to
a 0xFF000000 mask.
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