FreeCalypso > hg > freecalypso-sw

annotate target-utils/libcommon/uartsel.c @ 923:10b4bed10192

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gsm-fw/L1: fix for the DSP patch corruption bug The L1 code we got from the LoCosto fw contains a feature for DSP CPU load measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the code dealing with that feature is conditionalized as #if (DSP >= 38), but one spot was missed, and the MCU code was writing into an API word dealing with this feature. In TCS211 this DSP API word happens to be used by the DSP code patch, hence that write was corrupting the patched DSP code.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Mon, 19 Oct 2015 17:13:56 +0000
parents 40f607bb0a2c
children a7b0b426f9ca
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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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12 extern struct boot_rom_vars rom_vars;
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14 struct ns16550_regs *uart_base;
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15 char *uart_name;
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16
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17 uart_select_init()
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18 {
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19 switch (rom_vars.uart_id) {
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20 case 0:
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21 uart_base = (struct ns16550_regs *) 0xFFFF5800;
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22 uart_name = "MODEM";
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23 break;
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24 case 1:
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25 uart_base = (struct ns16550_regs *) 0xFFFF5000;
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26 uart_name = "IrDA";
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27 break;
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28 default:
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29 _exit(HALTCODE_INVALIDUART);
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30 }
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31 }