| 1 | #ifndef __ASSEMBLER__ |
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| 2 | #define __ASSEMBLER__ |
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| 3 | #endif |
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| 4 | #include "bmips.h" |
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| 5 | #include "bchp.h" |
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| 6 | #include "bchp_common.h" |
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| 7 | #include "bchp_bsp_glb_control.h" |
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| 8 | #include "bchp_bsp_cmdbuf.h" |
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| 9 | |
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| 10 | /* |
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| 11 | * The following define needs to be manually turned on/off |
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| 12 | * depending on what chip the CFE is being built for. |
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| 13 | * |
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| 14 | * NON-ZEUS_2_0: |
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| 15 | * 7231A0/7344A0/7346A0/7420A0/7425A0/7552A0 FullROM |
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| 16 | * |
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| 17 | * ZEUS_2_0: |
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| 18 | * 7231A0/7344A0/7346A0/7420A0/7425A0/7552A0 BSECK |
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| 19 | * 7231B0/7344B0/7346B0/7420B0/7425B0/7552B0 FullROM |
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| 20 | */ |
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| 21 | #if (BCHP_VER == BCHP_VER_B0) |
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| 22 | #define ZEUS_2_0 |
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| 23 | #endif |
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| 24 | |
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| 25 | #if defined(ZEUS_2_0) |
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| 26 | #define CMD_INBUFFER2 (2 * 384) /* 0x300 */ |
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| 27 | #else |
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| 28 | #define CMD_INBUFFER2 (1 * 384) /* 0x180 */ |
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| 29 | #endif /* ZEUS_2_0 */ |
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| 30 | #define CMD_OUTBUFFER2 (3 * 384) /* 0x480 */ |
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| 31 | |
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| 32 | #if 0 |
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| 33 | .data |
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| 34 | ScramErr_msg: .asciiz "ScramErr=" |
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| 35 | CR_msg: .asciiz "\n\r" |
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| 36 | #endif |
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| 37 | |
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| 38 | .text |
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| 39 | |
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| 40 | /****************************************************************************** |
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| 41 | * Function: sdram_scramble_command |
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| 42 | * Arguments: None |
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| 43 | * Returns: None |
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| 44 | * Description: |
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| 45 | * Trashes: s0, t0, t1, a0 |
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| 46 | * |
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| 47 | * pseudo code: |
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| 48 | * |
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| 49 | ******************************************************************************/ |
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| 50 | |
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| 51 | |
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| 52 | LEAF(sdram_scramble_command) |
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| 53 | |
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| 54 | .set noreorder |
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| 55 | /* a1: parameter length |
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| 56 | */ |
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| 57 | |
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| 58 | move s0, ra |
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| 59 | |
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| 60 | start_Enable_SDRAM_Encryption: |
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| 61 | |
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| 62 | /* XXX */ |
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| 63 | li a0, 'S' |
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| 64 | bal _writeasm |
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| 65 | nop |
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| 66 | |
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| 67 | /*li t0,0xb030b008 */ |
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| 68 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_GLB_CONTROL_GLB_IRDY) |
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| 69 | |
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| 70 | lw t1,0(t0) |
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| 71 | |
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| 72 | andi t1,t1,0x02 |
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| 73 | |
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| 74 | |
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| 75 | |
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| 76 | bne t1,0x02,end_Enable_SDRAM_Encryption |
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| 77 | |
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| 78 | nop |
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| 79 | |
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| 80 | |
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| 81 | /*li t0,0xb0307980 */ |
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| 82 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_CMDBUF_DMEMi_ARRAY_BASE+CMD_INBUFFER2) |
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| 83 | |
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| 84 | li t1,0x10 |
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| 85 | |
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| 86 | sw t1,0(t0) |
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| 87 | |
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| 88 | li t1,0xDE |
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| 89 | |
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| 90 | sw t1,4(t0) |
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| 91 | |
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| 92 | li t1,0xabcdef00 |
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| 93 | |
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| 94 | sw t1,8(t0) |
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| 95 | |
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| 96 | li t1,0xe355aa1C |
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| 97 | |
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| 98 | sw t1,12(t0) |
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| 99 | |
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| 100 | li t1,0x789a0000 |
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| 101 | |
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| 102 | addu t1, t1, a1 |
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| 103 | |
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| 104 | sw t1,16(t0) |
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| 105 | |
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| 106 | /* cold boot, new keys */ |
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| 107 | li t1,0x0 |
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| 108 | |
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| 109 | sw t1,20(t0) |
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| 110 | |
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| 111 | /* set ILOAD2 */ |
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| 112 | |
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| 113 | /*li t0,0xb030b028*/ |
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| 114 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_GLB_CONTROL_GLB_ILOAD2) |
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| 115 | |
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| 116 | li t1,0x01 |
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| 117 | |
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| 118 | sw t1,0(t0) |
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| 119 | |
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| 120 | |
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| 121 | |
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| 122 | /* poll for OLOAD2 */ |
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| 123 | |
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| 124 | wait_for_OLOAD_DE_SDENC: |
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| 125 | |
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| 126 | |
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| 127 | /*li t0,0xb030b020 */ |
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| 128 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_GLB_CONTROL_GLB_OLOAD2) |
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| 129 | |
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| 130 | lw t1,0(t0) |
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| 131 | |
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| 132 | andi t1, t1,0x01 |
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| 133 | |
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| 134 | beq t1,zero,wait_for_OLOAD_DE_SDENC |
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| 135 | |
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| 136 | nop |
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| 137 | |
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| 138 | |
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| 139 | |
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| 140 | /* reset OLOAD2 */ |
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| 141 | |
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| 142 | /*li t0,0xb030b010 */ |
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| 143 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_GLB_CONTROL_GLB_HOST_INTR_STATUS) |
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| 144 | |
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| 145 | li t1,0x00 |
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| 146 | |
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| 147 | sw t1,0(t0) |
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| 148 | |
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| 149 | /*li t0,0xb030b020 */ |
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| 150 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_GLB_CONTROL_GLB_OLOAD2) |
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| 151 | |
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| 152 | li t1,0x00 |
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| 153 | |
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| 154 | sw t1,0(t0) |
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| 155 | |
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| 156 | |
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| 157 | |
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| 158 | /* check for status */ |
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| 159 | |
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| 160 | /*li t0,0xb0307c80*/ |
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| 161 | li t0, PHYS_TO_K1(BCHP_PHYSICAL_OFFSET+BCHP_BSP_CMDBUF_DMEMi_ARRAY_BASE+CMD_OUTBUFFER2) |
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| 162 | |
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| 163 | lw v0,20(t0) |
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| 164 | |
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| 165 | #if 0 |
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| 166 | /* XXX */ |
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| 167 | la a0, ScramErr_msg |
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| 168 | bal aegis_print_string |
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| 169 | nop |
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| 170 | bal aegis_print_hex |
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| 171 | nop |
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| 172 | la a0, CR_msg |
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| 173 | bal aegis_print_string |
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| 174 | nop |
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| 175 | #endif |
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| 176 | |
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| 177 | |
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| 178 | beq v0,zero,end_Enable_SDRAM_Encryption |
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| 179 | |
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| 180 | nop |
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| 181 | |
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| 182 | end_Enable_SDRAM_Encryption: |
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| 183 | move ra, s0 |
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| 184 | |
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| 185 | |
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| 186 | .set reorder |
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| 187 | jr ra |
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| 188 | nop |
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| 189 | |
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| 190 | END(sdram_scramble_command) |
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| 191 | |
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| 192 | |
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| 193 | |
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| 194 | /****************************************************************************** |
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| 195 | * Function: scramble_sdram |
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| 196 | * Arguments: None |
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| 197 | * Returns: None |
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| 198 | * Description: |
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| 199 | * Trashes: t8, a0, a1 |
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| 200 | * |
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| 201 | * pseudo code: |
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| 202 | * |
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| 203 | ******************************************************************************/ |
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| 204 | |
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| 205 | LEAF(scramble_sdram) |
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| 206 | |
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| 207 | .set noreorder |
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| 208 | move t8, ra |
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| 209 | |
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| 210 | /* Send a 4 byte length sdram scrambling command. */ |
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| 211 | li a1, 0x4 |
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| 212 | |
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| 213 | bal sdram_scramble_command |
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| 214 | |
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| 215 | nop |
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| 216 | |
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| 217 | nop |
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| 218 | |
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| 219 | move ra, t8 |
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| 220 | |
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| 221 | |
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| 222 | .set reorder |
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| 223 | jr ra |
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| 224 | nop |
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| 225 | |
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| 226 | END(scramble_sdram) |
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