FreeCalypso > hg > freecalypso-sw
comparison loadagent/romvars.h @ 0:9beb566ded04
starting with the toolchain for building our loadagent
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sun, 28 Apr 2013 17:36:07 +0000 |
parents | |
children | da98dc08f575 |
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-1:000000000000 | 0:9beb566ded04 |
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1 /* | |
2 * Our loadagent will always be loaded into Calypso targets by the on-chip | |
3 * boot ROM operating in the UART download mode. The lowest IRAM address | |
4 * at which we can load our code is 0x800750; somewhat lower at 0x800518 | |
5 * the boot ROM downloader has a few variables which may have been intended | |
6 * to be private to the boot ROM, but which are useful to us. For example, | |
7 * by looking at these variables, we can see which of the two UARTs was | |
8 * used to feed our code to the boot ROM, and use the same UART for | |
9 * subsequent communication - without building multiple versions of our | |
10 * loadagent or resorting to other ugliness. | |
11 * | |
12 * This header file defines the layout of the IRAM structure in question, | |
13 * based on the disassembly of the boot ROM. | |
14 */ | |
15 | |
16 struct boot_rom_vars { | |
17 u8 baud_rate_code; | |
18 u8 pad1[3]; | |
19 u32 uart_timeout; | |
20 u8 uart_id; | |
21 u8 pll_config; | |
22 u16 cs_ws_config; | |
23 u8 clktcxo_13mhz; | |
24 u8 rhea_cntl; | |
25 u16 chksum_cmd; | |
26 u16 chksum_accum; | |
27 u16 pad2; | |
28 u32 branch_addr; | |
29 }; |