FreeCalypso > hg > freecalypso-tools
annotate target-utils/include/romvars.h @ 836:f7e946389f8b
tiaud-compile: add support for aec-new
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 30 Jul 2021 00:50:47 +0000 |
parents | e7502631a0f9 |
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rev | line source |
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1 /* |
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2 * Our loadagent will always be loaded into Calypso targets by the on-chip |
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3 * boot ROM operating in the UART download mode. The lowest IRAM address |
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4 * at which we can load our code is 0x800750; somewhat lower at 0x800518 |
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Mychaela Falconia <falcon@freecalypso.org>
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5 * the boot ROM downloader has a few variables which may have been intended |
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Mychaela Falconia <falcon@freecalypso.org>
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6 * to be private to the boot ROM, but which are useful to us. For example, |
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Mychaela Falconia <falcon@freecalypso.org>
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7 * by looking at these variables, we can see which of the two UARTs was |
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Mychaela Falconia <falcon@freecalypso.org>
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8 * used to feed our code to the boot ROM, and use the same UART for |
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Mychaela Falconia <falcon@freecalypso.org>
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9 * subsequent communication - without building multiple versions of our |
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Mychaela Falconia <falcon@freecalypso.org>
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10 * loadagent or resorting to other ugliness. |
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Mychaela Falconia <falcon@freecalypso.org>
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11 * |
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12 * This header file defines the layout of the IRAM structure in question, |
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13 * based on the disassembly of the boot ROM. |
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Mychaela Falconia <falcon@freecalypso.org>
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14 */ |
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15 |
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16 #ifndef __ROMVARS_H |
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17 #define __ROMVARS_H |
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18 |
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19 #include "types.h" |
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20 |
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21 struct boot_rom_vars { |
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22 u8 baud_rate_code; |
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23 u8 pad1[3]; |
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24 u32 uart_timeout; |
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25 u8 uart_id; |
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26 u8 pll_config; |
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27 u16 cs_ws_config; |
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28 u8 clktcxo_13mhz; |
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29 u8 rhea_cntl; |
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30 u16 chksum_cmd; |
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31 u16 chksum_accum; |
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32 u16 pad2; |
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33 u32 branch_addr; |
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34 }; |
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35 |
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36 #endif /* include guard */ |