FreeCalypso > hg > freecalypso-tools
annotate target-utils/libcommon/uartsel.c @ 752:c79aaed75bd8
compile-fc-batt: allow possible third field in source lines
Battery tables maintained in the fc-battery-conf repository will now
have a third field added, defining thresholds for the battery bars icon,
and there will be a new utility to compile them into the new
/etc/batterytab2 file read by the FC Tourmaline version of our
FCHG driver. For backward compatibility with the original Magnetite
version of FCHG, compile-fc-batt remains the tool for compiling the
original /etc/batterytab file format, and it needs to ignore the
newly added third field in battery table sources.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 05 Nov 2020 20:37:55 +0000 |
parents | 2942c5ef76ed |
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0
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1 /* |
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2 * uart_select_init() figures out which UART was used to load us |
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3 * through the boot ROM, and sets things up for us to use the same |
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4 * UART for our communication. |
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5 */ |
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6 |
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7 #include "types.h" |
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8 #include "romvars.h" |
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9 #include "ns16550.h" |
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10 #include "halt.h" |
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11 |
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12 extern struct ns16550_regs *uart_base; |
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13 |
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14 static u16 rom_version; |
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15 static struct boot_rom_vars *rom_vars; |
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16 static char *uart_name; |
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17 |
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18 uart_select_init() |
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19 { |
35
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20 rom_version = *(const u16 *)0x1FFE; |
0
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21 |
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22 switch (rom_version) { |
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23 case 0x0200: |
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24 rom_vars = (struct boot_rom_vars *) 0x800504; |
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25 break; |
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26 case 0x0300: |
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27 rom_vars = (struct boot_rom_vars *) 0x800518; |
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28 break; |
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29 default: |
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30 _exit(HALTCODE_BOOTROMVER); |
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31 } |
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32 |
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33 switch (rom_vars->uart_id) { |
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34 case 0: |
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35 uart_base = (struct ns16550_regs *) 0xFFFF5800; |
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36 uart_name = "MODEM"; |
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37 break; |
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38 case 1: |
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39 uart_base = (struct ns16550_regs *) 0xFFFF5000; |
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40 uart_name = "IrDA"; |
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41 break; |
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42 default: |
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43 _exit(HALTCODE_INVALIDUART); |
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44 } |
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45 } |
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46 |
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47 print_boot_rom_info() |
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48 { |
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49 printf("Loaded via boot ROM v%04X, UART %d (%s) at baud rate #%d\n", |
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50 rom_version, rom_vars->uart_id, uart_name, |
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51 rom_vars->baud_rate_code); |
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52 printf("CLKTCXO input autodetected to be %d MHz\n", |
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53 rom_vars->clktcxo_13mhz ? 13 : 26); |
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54 } |