[b7a6d23a] | 1 | /* |
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| 2 | * Authorship |
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| 3 | * ---------- |
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| 4 | * This software ('beatnik' RTEMS BSP for MVME6100 and MVME5500) was |
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| 5 | * created by Till Straumann <strauman@slac.stanford.edu>, 2005-2007, |
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| 6 | * Stanford Linear Accelerator Center, Stanford University. |
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| 7 | * |
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| 8 | * Acknowledgement of sponsorship |
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| 9 | * ------------------------------ |
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| 10 | * The 'beatnik' BSP was produced by |
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| 11 | * the Stanford Linear Accelerator Center, Stanford University, |
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| 12 | * under Contract DE-AC03-76SFO0515 with the Department of Energy. |
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| 13 | * |
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| 14 | * Government disclaimer of liability |
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| 15 | * ---------------------------------- |
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| 16 | * Neither the United States nor the United States Department of Energy, |
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| 17 | * nor any of their employees, makes any warranty, express or implied, or |
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| 18 | * assumes any legal liability or responsibility for the accuracy, |
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| 19 | * completeness, or usefulness of any data, apparatus, product, or process |
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| 20 | * disclosed, or represents that its use would not infringe privately owned |
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| 21 | * rights. |
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| 22 | * |
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| 23 | * Stanford disclaimer of liability |
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| 24 | * -------------------------------- |
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| 25 | * Stanford University makes no representations or warranties, express or |
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| 26 | * implied, nor assumes any liability for the use of this software. |
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| 27 | * |
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| 28 | * Stanford disclaimer of copyright |
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| 29 | * -------------------------------- |
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| 30 | * Stanford University, owner of the copyright, hereby disclaims its |
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| 31 | * copyright and all other rights in this software. Hence, anyone may |
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| 32 | * freely use it for any purpose without restriction. |
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| 33 | * |
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| 34 | * Maintenance of notices |
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| 35 | * ---------------------- |
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| 36 | * In the interest of clarity regarding the origin and status of this |
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| 37 | * SLAC software, this and all the preceding Stanford University notices |
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| 38 | * are to remain affixed to any copy or derivative of this software made |
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| 39 | * or distributed by the recipient and are to be affixed to any copy of |
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| 40 | * software made or distributed by the recipient that contains a copy or |
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| 41 | * derivative of this software. |
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| 42 | * |
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| 43 | * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 |
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| 44 | */ |
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| 45 | |
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| 46 | #include <bsp.h> |
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| 47 | #include <stdio.h> |
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| 48 | #include <inttypes.h> |
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| 49 | |
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| 50 | #define STATIC static |
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| 51 | |
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| 52 | #include <bsp/flashPgmPvt.h> |
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| 53 | |
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| 54 | /* MVME Board Specifica; board status reg. 2 where write-enable is controlled... */ |
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| 55 | |
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| 56 | #define SYS_FLASHA_WP (1<<5) |
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| 57 | #define SYS_FBOOTB_WP (1<<3) |
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| 58 | #define SYS_FBA_WP_HDR (1<<2) |
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| 59 | #define SYS_FBOOTB_WP_HDR (1<<1) |
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| 60 | |
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| 61 | #define SYS_STATUS_2_REG (1) |
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| 62 | |
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| 63 | /* Forward Declarations */ |
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| 64 | STATIC struct bankdesc * |
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| 65 | bankcheck(int bank, int quiet); |
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| 66 | |
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| 67 | static int |
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| 68 | flash_wp(int bank, int enbl); |
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| 69 | |
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| 70 | STATIC uint32_t |
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| 71 | read_us_timer(void); |
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| 72 | |
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| 73 | /* Global Variables */ |
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| 74 | |
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| 75 | /* motload memory map */ |
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| 76 | static struct bankdesc mvme5500Flash[] = { |
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| 77 | { 0, 2 }, /* first entry gives number of entries */ |
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| 78 | { 0xf2000000, 0x08000000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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| 79 | { 0xff800000, 0x00800000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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| 80 | }; |
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| 81 | |
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| 82 | /* motload memory map */ |
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| 83 | static struct bankdesc mvme6100Flash[] = { |
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| 84 | { 0, 2 }, /* first entry gives number of entries */ |
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| 85 | { 0xf4000000, 0x04000000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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| 86 | { 0xf8000000, 0x04000000, 0x20000*2, 2, BSP_flash_vendor_intel, 0, 0, 0, }, |
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| 87 | }; |
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| 88 | |
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| 89 | struct flash_bsp_ops BSP_flashBspOps = { |
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| 90 | bankcheck : bankcheck, |
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| 91 | flash_wp : flash_wp, |
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| 92 | read_us_timer: read_us_timer, |
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| 93 | }; |
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| 94 | |
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| 95 | /* set (enbl:1), clear (enbl:0) or query (enbl:-1) write protection |
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| 96 | * |
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| 97 | * RETURNS 0 on success, nonzero on error. |
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| 98 | */ |
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| 99 | static int |
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| 100 | flash_wp(int bank, int enbl) |
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| 101 | { |
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| 102 | BSP_BoardType b; |
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| 103 | A8 p; |
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| 104 | unsigned char hwp = 0, swp; |
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| 105 | |
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| 106 | /* validate 'bank' argument */ |
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| 107 | if ( !bankcheck( bank, 0 ) ) |
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| 108 | return -1; |
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| 109 | |
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| 110 | switch ( (b=BSP_getBoardType()) ) { |
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| 111 | default: |
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| 112 | fprintf(stderr,"Unknown board type %i\n",b); |
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| 113 | return -1; |
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| 114 | |
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| 115 | case MVME5500: |
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| 116 | /* bit enables both banks; no readback of jumper available */ |
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| 117 | p = (A8)(BSP_MV64x60_DEV1_BASE + SYS_STATUS_2_REG); |
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| 118 | swp = SYS_FLASHA_WP; |
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| 119 | break; |
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| 120 | |
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| 121 | case MVME6100: |
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| 122 | { |
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| 123 | |
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| 124 | p = (A8)(BSP_MV64x60_DEV1_BASE + SYS_STATUS_2_REG); |
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| 125 | if ( 0 == bank ) { |
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| 126 | hwp = SYS_FBA_WP_HDR; |
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| 127 | swp = SYS_FLASHA_WP; |
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| 128 | } else { |
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| 129 | hwp = SYS_FBOOTB_WP_HDR; |
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| 130 | swp = SYS_FBOOTB_WP; |
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| 131 | } |
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| 132 | if ( enbl && (*p & hwp) ) { |
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| 133 | fprintf(stderr,"HW write protection enabled (jumper)\n"); |
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| 134 | return -1; |
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| 135 | } |
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| 136 | } |
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| 137 | break; |
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| 138 | } |
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| 139 | if ( -1 == enbl ) { |
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| 140 | /* query */ |
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| 141 | return *p & (swp | hwp); |
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| 142 | } else { |
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| 143 | if ( enbl ) { |
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| 144 | *p |= swp; |
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| 145 | } else { |
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[721fe34] | 146 | *p &= ~swp; |
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[b7a6d23a] | 147 | } |
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| 148 | } |
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| 149 | return 0; |
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| 150 | } |
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| 151 | |
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| 152 | /* Lookup bank description in table */ |
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| 153 | STATIC struct bankdesc * |
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| 154 | bankcheck(int bank, int quiet) |
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| 155 | { |
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| 156 | struct bankdesc *b; |
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| 157 | switch ( BSP_getBoardType() ) { |
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| 158 | case MVME5500: b = mvme5500Flash; break; |
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| 159 | case MVME6100: b = mvme6100Flash; break; |
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| 160 | default: |
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| 161 | fprintf(stderr,"Unknown/unsupported board type\n"); |
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| 162 | return 0; |
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| 163 | } |
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| 164 | if ( bank >= b->size || bank < 0 ) { |
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| 165 | if ( !quiet ) |
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| 166 | fprintf(stderr,"Invalid flash bank #: %i; (too big)\n", bank); |
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| 167 | return 0; |
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| 168 | } |
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| 169 | return b + bank + 1; |
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| 170 | } |
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| 171 | |
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| 172 | STATIC uint32_t read_us_timer(void) |
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| 173 | { |
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| 174 | uint32_t now, mhz; |
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| 175 | |
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| 176 | /* we burn cycles anyways... */ |
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| 177 | mhz = BSP_bus_frequency/BSP_time_base_divisor/1000; |
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| 178 | |
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| 179 | asm volatile("mftb %0":"=r"(now)); |
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| 180 | |
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| 181 | return now/mhz; |
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| 182 | } |
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