gh_sdk56063.asm (3908B)
1 ; 2 ; 3 ; 4 ; This license is set out in https://raw.githubusercontent.com/Broadcom-Network-Switching-Software/OpenBCM/master/Legal/LICENSE file. 5 ; 6 ; Copyright 2007-2019 Broadcom Inc. All rights reserved. 7 ; 8 ; 9 ; This is the default program for Greyhound SKUs: 10 ; BCM56063 11 ; 12 ; To start it, use the following commands from BCM: 13 ; 14 ; led load gh_sdk56063.hex 15 ; led auto on 16 ; led start 17 ; 18 ; Assume 1 LED per port for Link. And 2 bits stream per LED. 19 ; Link-Down = Off (b'00) 20 ; Link-Up = On (b'01) 21 ; 22 ; Totally 20 ports/LEDs will be outputed. 23 ; 24 ; Link up/down info cannot be derived from LINKEN or LINKUP, as the LED 25 ; processor does not always have access to link status. This program 26 ; assumes link status is kept current in bit 0 of RAM byte (0xA0 + portnum). 27 ; Generally, a program running on the main CPU must update these 28 ; locations on link change; see linkscan callback in 29 ; $SDK/src/appl/diag/ledproc.c. 30 ; 31 32 ; 33 ; Constants 34 ; 35 NUM_PORTS equ 20 36 MIN_PORT_0 equ 2 37 MAX_PORT_0 equ 17 38 MIN_PORT_1 equ 26 39 MAX_PORT_1 equ 26 40 MIN_PORT_2 equ 28 41 MAX_PORT_2 equ 28 42 MIN_PORT_3 equ 30 43 MAX_PORT_3 equ 30 44 MIN_PORT_4 equ 32 45 MAX_PORT_4 equ 32 46 47 ; 48 ; LED process 49 ; 50 start: 51 ld a, MIN_PORT_0 52 53 iter_sec0: 54 cmp a, MAX_PORT_0+1 55 jnc iter_sec1 56 57 cmp a, MIN_PORT_0 58 jz iter_sec0_init 59 jc iter_sec0_init 60 jmp iter_sec0_start 61 iter_sec0_init: 62 ld a, MIN_PORT_0 63 ld b, MAX_PORT_0 64 ld (SEC_MAX), b 65 iter_sec0_start: 66 jmp iter_common 67 68 iter_sec1: 69 cmp a, MAX_PORT_1+1 70 jnc iter_sec2 71 72 cmp a, MIN_PORT_1 73 jz iter_sec1_init 74 jc iter_sec1_init 75 jmp iter_sec1_start 76 iter_sec1_init: 77 ld a, MIN_PORT_1 78 ld b, MAX_PORT_1 79 ld (SEC_MAX), b 80 iter_sec1_start: 81 jmp iter_common 82 83 iter_sec2: 84 cmp a, MAX_PORT_2+1 85 jnc iter_sec3 86 87 cmp a, MIN_PORT_2 88 jz iter_sec2_init 89 jc iter_sec2_init 90 jmp iter_sec2_start 91 iter_sec2_init: 92 ld a, MIN_PORT_2 93 ld b, MAX_PORT_2 94 ld (SEC_MAX), b 95 iter_sec2_start: 96 jmp iter_common 97 98 iter_sec3: 99 cmp a, MAX_PORT_3+1 100 jnc iter_sec4 101 102 cmp a, MIN_PORT_3 103 jz iter_sec3_init 104 jc iter_sec3_init 105 jmp iter_sec3_start 106 iter_sec3_init: 107 ld a, MIN_PORT_3 108 ld b, MAX_PORT_3 109 ld (SEC_MAX), b 110 iter_sec3_start: 111 jmp iter_common 112 113 iter_sec4: 114 cmp a, MAX_PORT_4+1 115 jnc end 116 117 cmp a, MIN_PORT_4 118 jz iter_sec4_init 119 jc iter_sec4_init 120 jmp iter_sec4_start 121 iter_sec4_init: 122 ld a, MIN_PORT_4 123 ld b, MAX_PORT_4 124 ld (SEC_MAX), b 125 iter_sec4_start: 126 jmp iter_common 127 128 iter_common: 129 port a 130 ld (PORT_NUM), a 131 132 call get_link 133 134 ld a, (PORT_NUM) 135 inc a 136 ld b, (SEC_MAX) 137 inc b 138 cmp a, b 139 jz iter_sec0 140 jmp iter_common 141 142 end: 143 send 2*NUM_PORTS 144 145 ; 146 ; get_link 147 ; 148 ; This routine finds the link status LED for a port. 149 ; Link info is in bit 0 of the byte read from PORTDATA[port] 150 ; Inputs: (PORT_NUM) 151 ; Outputs: Carry flag set if link is up, clear if link is down. 152 ; Destroys: a, b 153 get_link: 154 ld b, PORTDATA 155 add b, (PORT_NUM) 156 ld a, (b) 157 tst a, 0 158 159 jc led_green 160 jmp led_black 161 162 ; 163 ; led_green 164 ; 165 ; Outputs: Bits to the LED stream indicating ON 166 ; 167 led_green: 168 push 0 169 pack 170 push 1 171 pack 172 ret 173 174 ; 175 ; led_black 176 ; 177 ; Outputs: Bits to the LED stream indicating OFF 178 ; 179 led_black: 180 push 0 181 pack 182 push 0 183 pack 184 ret 185 186 ; Variables (SDK software initializes LED memory from 0xA0-0xff to 0) 187 PORTDATA equ 0xA0 188 PORT_NUM equ 0xE0 189 SEC_MAX equ 0xE1 190 191 ; Symbolic names for the bits of the port status fields 192 RX equ 0x0 ; received packet 193 TX equ 0x1 ; transmitted packet 194 COLL equ 0x2 ; collision indicator 195 SPEED_C equ 0x3 ; 100 Mbps 196 SPEED_M equ 0x4 ; 1000 Mbps 197 DUPLEX equ 0x5 ; half/full duplex 198 FLOW equ 0x6 ; flow control capable 199 LINKUP equ 0x7 ; link down/up status 200 LINKEN equ 0x8 ; link disabled/enabled status 201 ZERO equ 0xE ; always 0 202 ONE equ 0xF ; always 1