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annotate nucleus/demo/calirq.h @ 40:b56928f8c001

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doc/Firmware_Architecture: stale links to docs updated to new FTP and web locations
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 07 May 2017 16:20:07 +0000
parents 75a11d740a02
children
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1 /*
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2 * Definitions for Calypso IRQ numbers and the related registers
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3 * Added to the FreeNucleus Calypso port by Spacefalcon the Outlaw.
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4 *
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5 * This header is usable from both .c and .S source files.
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6 */
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7
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8 #ifndef _CALYPSO_IRQ_H
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9 #define _CALYPSO_IRQ_H
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10
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11 #define IRQ_WATCHDOG 0
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12 #define IRQ_TIMER1 1
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13 #define IRQ_TIMER2 2
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14 #define IRQ_TSP_RX 3
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15 #define IRQ_TPU_FRAME 4
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16 #define IRQ_TPU_PAGE 5
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17 #define IRQ_SIMCARD 6
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18 #define IRQ_UART_MODEM 7
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19 #define IRQ_KEYPAD_GPIO 8
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20 #define IRQ_RTC_TIMER 9
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21 #define IRQ_RTC_ALARM_I2C 10
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22 #define IRQ_ULPD_GAUGING 11
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23 #define IRQ_EXTERNAL 12
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24 #define IRQ_SPI 13
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25 #define IRQ_DMA 14
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26 #define IRQ_API 15
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27 #define IRQ_SIM_DETECT 16
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28 #define IRQ_EXTERNAL_FIQ 17
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29 #define IRQ_UART_IRDA 18
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30 #define IRQ_ULPD_GSM_TIMER 19
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31 #define IRQ_GEA 20
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32
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33 #define MAX_IRQ_NUM 20
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34
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35 #define INTH_BASE_ADDR 0xFFFFFA00
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36
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37 #ifdef __ASSEMBLER__
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38
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39 /*
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40 * Assembly source with cpp
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41 *
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42 * The most convenient way to access registers like these from ARM
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43 * assembly is to load the base address of the register block in some
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44 * ARM register, using only one ldr rN, =xxx instruction and only one
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45 * literal pool entry, and then access various registers in the block
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46 * from the same base using the immediate offset addressing mode.
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47 *
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48 * Here we define the offsets for the usage scenario above.
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49 */
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50
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51 #define IT_REG1 0x00
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52 #define IT_REG2 0x02
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53 #define MASK_IT_REG1 0x08
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54 #define MASK_IT_REG2 0x0A
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55 #define IRQ_NUM 0x10
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56 #define FIQ_NUM 0x12
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57 #define IRQ_CTRL 0x14
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58 #define ILR_OFFSET 0x20
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59
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60 #else
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61
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62 /*
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63 * C source
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64 *
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65 * For access from C, we define the layout of the INTH register block
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66 * as a struct, and then define a pleudo-global-var for easy "volatile"
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67 * access.
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68 */
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69
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70 struct inth_regs {
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71 unsigned short it_reg1;
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72 unsigned short it_reg2;
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73 unsigned short pad1[2];
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74 unsigned short mask_it_reg1;
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75 unsigned short mask_it_reg2;
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76 unsigned short pad2[2];
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77 unsigned short irq_num;
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78 unsigned short fiq_num;
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79 unsigned short irq_ctrl;
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80 unsigned short pad3[5];
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81 unsigned short ilr_irq[MAX_IRQ_NUM+1];
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82 };
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83
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84 #define INTH_REGS (*(volatile struct inth_regs *) INTH_BASE_ADDR)
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85
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86 /*
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87 * C code can now access INTH registers like this:
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88 *
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89 * old_mask = INTH_REGS.mask_it_reg1;
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90 * INTH_REGS.mask_it_reg1 = new_mask;
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91 */
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92
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93 #endif
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94
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95 #endif /* _CALYPSO_IRQ_H */