| 1 | /************************************************************************* |
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| 2 | ** Broadcom Corp. Confidential |
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| 3 | ** Copyright 2010 Broadcom Corp. All Rights Reserved. |
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| 4 | ** |
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| 5 | ** THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE |
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| 6 | ** AGREEMENT BETWEEN THE USER AND BROADCOM. YOU HAVE NO RIGHT TO USE OR |
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| 7 | ** EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT. |
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| 8 | ** |
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| 9 | ** File: bl.S |
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| 10 | ** Description: low level board dependent startup code |
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| 11 | ** Created: alex[ |
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| 12 | ** |
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| 13 | ** REVISION: |
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| 14 | ** |
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| 15 | ***************************************************************************/ |
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| 16 | |
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| 17 | #include "bmips3300.h" |
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| 18 | #include "bchp_common.h" |
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| 19 | #include "bchp_sun_top_ctrl.h" |
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| 20 | #include "bchp_memc_ddr23_aphy_ac_0.h" |
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| 21 | #include "memc_0_config.h" |
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| 22 | |
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| 23 | #define SHMOO_STACK_START 0x80000000 |
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| 24 | #define SHMOO_STACK_SIZE 0x4000 |
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| 25 | |
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| 26 | #define BCHP_REG_BASE PHYS_TO_K1(BCHP_PHYSICAL_OFFSET) |
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| 27 | #define INITIAL_SR ((CP0_STATUS_SR_MASK | CP0_STATUS_CU1_MASK | CP0_STATUS_BEV_MASK | CP0_STATUS_IE_MASK) & ~( CP0_STATUS_ERL_MASK | CP0_STATUS_EXL_MASK)) |
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| 28 | BL_STACK_SIZE = 0x1000 |
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| 29 | |
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| 30 | .lcomm bl_stack, BL_STACK_SIZE |
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| 31 | .text |
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| 32 | .globl __start |
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| 33 | .set noreorder |
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| 34 | |
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| 35 | __start: |
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| 36 | b init_cpu |
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| 37 | nop |
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| 38 | .org __start+0x380 |
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| 39 | rom_gen_ex: # general exception will loop here |
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| 40 | b rom_gen_ex |
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| 41 | nop |
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| 42 | nop |
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| 43 | nop |
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| 44 | .globl key1 |
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| 45 | key1: |
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| 46 | /* .fill 0x80, 1, 0xaa */ |
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| 47 | /* test public key generated from privkey.pem */ |
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| 48 | .word 0x9A231766,0x5903DAB5,0x9BA09842,0x8C8E0A10 |
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| 49 | .word 0xA81264B2,0xF011A39C,0xE515793F,0x99900060 |
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| 50 | .word 0xDAA137F4,0xBA0C6075,0xE78D15D9,0x2A48DDD3 |
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| 51 | .word 0x71F3AE65,0x7CF04AFC,0x6AD79335,0x8EC267B5 |
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| 52 | .word 0xE5F95530,0x7CB71669,0xBA23B801,0x643A8299 |
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| 53 | .word 0xF2882267,0x8C5ECE15,0x8A9C7AD1,0x231F8D2B |
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| 54 | .word 0x19CF89F2,0xAE2905A2,0xD764A002,0x557C855E |
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| 55 | .word 0xC5640D61,0x4C27B99C,0x5B74E4B4,0xFEF0D90B |
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| 56 | key1_header: |
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| 57 | .fill 0x40, 1, 0xbb |
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| 58 | key1_signature: |
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| 59 | .fill 0x80, 1, 0xcc |
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| 60 | external_root_key: |
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| 61 | .fill 0x80, 1, 0xdd |
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| 62 | bootloader_signature: |
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| 63 | .fill 0x80, 1, 0xee |
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| 64 | bootloader_header: |
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| 65 | .fill 0x40, 1, 0x55 |
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| 66 | |
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| 67 | init_cpu: |
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| 68 | li t0, INITIAL_SR |
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| 69 | mtc0 t0, CP0_STATUS |
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| 70 | nop |
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| 71 | nop |
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| 72 | |
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| 73 | move $28, $0 |
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| 74 | /* cache off: clear top 2 bits of CP0, $22 select $2 */ |
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| 75 | mfc0 $2, $22, 0 |
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| 76 | and $2, $2, ~0xc0000000 |
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| 77 | mtc0 $2, $22, 0 |
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| 78 | nop |
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| 79 | /* Bring everything out of reset except external system reset */ |
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| 80 | li t0, BCHP_REG_BASE | BCHP_SUN_TOP_CTRL_SW_RESET |
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| 81 | li t3, (BCHP_SUN_TOP_CTRL_SW_RESET_aio_sw_reset_MASK |\ |
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| 82 | BCHP_SUN_TOP_CTRL_SW_RESET_bvn_sw_reset_MASK |\ |
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| 83 | BCHP_SUN_TOP_CTRL_SW_RESET_vec_sw_reset_MASK |\ |
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| 84 | BCHP_SUN_TOP_CTRL_SW_RESET_xpt_sw_reset_MASK |\ |
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| 85 | BCHP_SUN_TOP_CTRL_SW_RESET_sundry_sw_reset_MASK |\ |
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| 86 | BCHP_SUN_TOP_CTRL_SW_RESET_memc_sw_reset_MASK) |
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| 87 | sw t3,0(t0) |
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| 88 | sync |
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| 89 | li t3,0 |
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| 90 | sw t3,0(t0) |
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| 91 | |
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| 92 | #if 1 /* Surendra and Andrew indicate this is needed in the bootloader */ |
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| 93 | /* DRAM for HD DTA */ |
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| 94 | li t0, BCHP_REG_BASE | BCHP_MEMC_DDR23_APHY_AC_0_PLL_FREQ_CNTL |
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| 95 | lw t2, 0(t0) |
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| 96 | and t3, t2, ~BCHP_MEMC_DDR23_APHY_AC_0_PLL_FREQ_CNTL_MDIV_MASK |
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| 97 | or t3, (5 << BCHP_MEMC_DDR23_APHY_AC_0_PLL_FREQ_CNTL_MDIV_SHIFT) |
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| 98 | sw t3, 0(t0) |
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| 99 | sync |
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| 100 | #endif |
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| 101 | bal init_serial |
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| 102 | nop |
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| 103 | |
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| 104 | bal _writeasm |
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| 105 | li a0, '$' |
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| 106 | |
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| 107 | bal init_mips |
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| 108 | nop |
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| 109 | |
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| 110 | bal do_chip_init |
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| 111 | nop |
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| 112 | |
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| 113 | bal init_serial |
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| 114 | nop |
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| 115 | |
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| 116 | li a0, SHMOO_STACK_START |
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| 117 | li a1, SHMOO_STACK_SIZE |
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| 118 | bal lock_d_cache |
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| 119 | nop |
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| 120 | |
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| 121 | /* now initialize sp to stack start */ |
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| 122 | la sp, (SHMOO_STACK_START + SHMOO_STACK_SIZE - 48) |
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| 123 | # create a stack space for the the memc_init arguments. |
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| 124 | addiu sp, -16 |
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| 125 | # load parameters in a0-a3 for memc_init |
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| 126 | |
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| 127 | /*int memc_init(int32_t memc_num_to_shmoo, int32_t write_dqs_shmoo_range, uint32_t num_byte_slices, uint32_t gate_value) |
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| 128 | */ |
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| 129 | li a0, 0x0 |
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| 130 | lui a1, MEMC_0_DEFAULT_WRITE_DQS_PHASE_RANGE_UPPER |
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| 131 | ori a1, MEMC_0_DEFAULT_WRITE_DQS_PHASE_RANGE_LOWER |
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| 132 | li a2, 2 #16bit DDR |
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| 133 | li a3, MEMC_0_DEFAULT_GATE_VALUE |
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| 134 | |
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| 135 | la t0, memc_init |
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| 136 | jalr t0 |
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| 137 | nop |
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| 138 | |
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| 139 | bal _writeasm |
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| 140 | li a0, 'H' |
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| 141 | |
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| 142 | bal invalidate_all_i_cache |
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| 143 | nop |
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| 144 | |
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| 145 | bal _writeasm |
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| 146 | li a0, 'E' |
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| 147 | |
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| 148 | bal clear_all_d_cache |
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| 149 | nop |
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| 150 | bal _writeasm |
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| 151 | li a0, 'L' |
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| 152 | |
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| 153 | /* copy data segment */ |
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| 154 | la a0, _etext |
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| 155 | la a1, _fdata |
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| 156 | la t2,_edata |
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| 157 | subu a2,t2,a1 |
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| 158 | |
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| 159 | beqz a2, 2f |
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| 160 | nop |
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| 161 | 1: |
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| 162 | lw t0, 0(a0) |
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| 163 | sw t0, 0(a1) |
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| 164 | sub a2, a2, 4 |
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| 165 | addi a0, a0, 4 |
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| 166 | addi a1, a1, 4 |
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| 167 | bnez a2, 1b |
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| 168 | nop |
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| 169 | 2: |
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| 170 | bal _writeasm |
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| 171 | li a0, 'L' |
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| 172 | |
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| 173 | /* clear bss segment */ |
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| 174 | la a0,_fbss |
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| 175 | la a1,_end |
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| 176 | subu a1,a1,a0 |
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| 177 | |
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| 178 | beqz a1, 2f |
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| 179 | nop |
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| 180 | 1: |
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| 181 | sw zero,0(a0) |
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| 182 | sub a1, a1, 4 |
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| 183 | addi a0, a0, 4 |
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| 184 | bnez a1, 1b |
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| 185 | nop |
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| 186 | 2: |
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| 187 | bal _writeasm |
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| 188 | li a0, 'O' |
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| 189 | |
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| 190 | /* load stack pointer*/ |
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| 191 | la sp, bl_stack + BL_STACK_SIZE - 24 |
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| 192 | /* jump in to cached segment */ |
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| 193 | la t0, bootloader_main |
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| 194 | jalr t0 |
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| 195 | move a0, zero |
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| 196 | loop: |
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| 197 | b loop |
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| 198 | nop |
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| 199 | |
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| 200 | LEAF(aligned_copy) |
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| 201 | |
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| 202 | 1: |
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| 203 | lw v0, 0(a0) |
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| 204 | addiu a2, a2, -4 |
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| 205 | sw v0, 0(a1) |
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| 206 | addiu a0, a0, 4 |
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| 207 | bnez a2, 1b |
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| 208 | addiu a1, a1, 4 |
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| 209 | |
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| 210 | jr ra |
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| 211 | nop |
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| 212 | |
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| 213 | END(aligned_copy) |
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| 214 | |
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| 215 | #include "uart.s" |
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| 216 | #include "chip.s" |
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| 217 | #undef RelAddrPrintChar |
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| 218 | #undef RelAddrPrintHex32 |
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| 219 | #undef SHMOO_STACK_START |
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| 220 | #undef SHMOO_STACK_SIZE |
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| 221 | #include "common_routines.s" |
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| 222 | #include "cache_lib.s" |
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| 223 | #include "mips_libs.s" |
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| 224 | #include "memc_0_client_prog.s" |
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| 225 | #include "memc_0_access.s" |
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| 226 | #include "run_shmoo.s" |
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| 227 | |
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