| 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: bls1.S |
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| 10 | ** Description: stage 1 of two stage bootloader for 755x chip. |
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| 11 | ** Created: alexp |
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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.h" |
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| 19 | #include "bchp_common.h" |
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| 20 | #include "bchp_sun_top_ctrl.h" |
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| 21 | #include "bchp_memc_ddr23_aphy_ac_0.h" |
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| 22 | #include "memc_0_config.h" |
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| 23 | #include "chip_secure.physical_7550.h" |
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| 24 | |
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| 25 | #define SHMOO_STACK_START 0x80000000 |
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| 26 | #define SHMOO_STACK_SIZE 0x4000 |
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| 27 | |
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| 28 | #define BCHP_REG_BASE PHYS_TO_K1(BCHP_PHYSICAL_OFFSET) |
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| 29 | #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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| 30 | BL_STACK_SIZE = 0x1000 |
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| 31 | #if defined(RSA_BITS) |
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| 32 | RSA_KEY_SIZE = (RSA_BITS/8) |
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| 33 | #else |
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| 34 | RSA_KEY_SIZE = 0x80 |
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| 35 | #endif |
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| 36 | .lcomm bl_stack, BL_STACK_SIZE |
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| 37 | .text |
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| 38 | .globl __start |
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| 39 | .set noreorder |
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| 40 | |
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| 41 | __start: |
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| 42 | b init_cpu |
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| 43 | nop |
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| 44 | nop |
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| 45 | nop |
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| 46 | /* size of stage1+stage2 */ |
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| 47 | .word _bootloader_size |
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| 48 | .org __start+0x380 |
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| 49 | rom_gen_ex: # general exception will loop here |
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| 50 | b rom_gen_ex |
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| 51 | nop |
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| 52 | nop |
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| 53 | nop |
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| 54 | .org __start+0x400 |
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| 55 | .globl key1 |
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| 56 | key1: |
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| 57 | .include "BCM7572_UDTA_key1_m0.S" |
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| 58 | /* .include "test_key1_m0.S" */ |
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| 59 | /* .include "test1024_key1.S" */ |
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| 60 | /* .include "example_key1.S"*/ |
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| 61 | external_root_key: |
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| 62 | .fill RSA_KEY_SIZE, 1, 0xdd |
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| 63 | bootloader_signature: |
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| 64 | .fill RSA_KEY_SIZE, 1, 0xee |
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| 65 | bootloader_header: |
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| 66 | .fill 0x40, 1, 0x55 |
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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, $0 |
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| 74 | .if 0 /* Surendra and Andrew indicate this is needed in the bootloader */ |
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| 75 | /* DRAM for HD DTA */ |
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| 76 | li t0, BCHP_REG_BASE | BCHP_MEMC_DDR23_APHY_AC_0_PLL_FREQ_CNTL |
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| 77 | lw t2, 0(t0) |
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| 78 | and t3, t2, ~BCHP_MEMC_DDR23_APHY_AC_0_PLL_FREQ_CNTL_MDIV_MASK |
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| 79 | or t3, (5 << BCHP_MEMC_DDR23_APHY_AC_0_PLL_FREQ_CNTL_MDIV_SHIFT) |
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| 80 | sw t3, 0(t0) |
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| 81 | sync |
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| 82 | .endif |
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| 83 | /* check if otp_rom_uart_disable bit is set */ |
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| 84 | li t0, BCHP_REG_BASE | XPT_OTP_MSP_WORD_8 |
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| 85 | lw t2, 0(t0) |
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| 86 | andi t2, 0x10 |
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| 87 | bnez t2, skip_uart_init |
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| 88 | nop |
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| 89 | |
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| 90 | bal init_serial |
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| 91 | nop |
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| 92 | |
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| 93 | bal _writeasm |
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| 94 | li a0, '$' |
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| 95 | skip_uart_init: |
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| 96 | bal do_chip_init |
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| 97 | nop |
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| 98 | |
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| 99 | bal _writeasm |
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| 100 | li a0, '?' |
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| 101 | |
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| 102 | bal init_mips |
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| 103 | nop |
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| 104 | |
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| 105 | bal _writeasm |
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| 106 | li a0, '+' |
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| 107 | |
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| 108 | li a0, SHMOO_STACK_START |
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| 109 | li a1, SHMOO_STACK_SIZE |
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| 110 | bal lock_d_cache |
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| 111 | nop |
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| 112 | |
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| 113 | /* now initialize sp to stack start */ |
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| 114 | la sp, (SHMOO_STACK_START + SHMOO_STACK_SIZE - 48) |
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| 115 | # create a stack space for the the memc_init arguments. |
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| 116 | addiu sp, -16 |
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| 117 | # load parameters in a0-a3 for memc_init |
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| 118 | |
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| 119 | /*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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| 120 | */ |
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| 121 | li a0, 0x0 |
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| 122 | lui a1, MEMC_0_DEFAULT_WRITE_DQS_PHASE_RANGE_UPPER |
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| 123 | ori a1, MEMC_0_DEFAULT_WRITE_DQS_PHASE_RANGE_LOWER |
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| 124 | li a2, 2 #16bit DDR |
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| 125 | li a3, MEMC_0_DEFAULT_GATE_VALUE |
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| 126 | |
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| 127 | la t0, memc_init |
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| 128 | jalr t0 |
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| 129 | nop |
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| 130 | #if defined(BOOT_SCRAMBLE_DRAM) |
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| 131 | #if (BCHP_VER>=BCHP_VER_B0) |
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| 132 | la t0, do_dram_scramble |
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| 133 | #else |
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| 134 | la t0, scramble_dram |
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| 135 | #endif |
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| 136 | jalr t0 |
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| 137 | nop |
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| 138 | #endif |
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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 | /* index-writeback-invalidate-d */ |
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| 143 | bal clear_all_d_cache |
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| 144 | nop |
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| 145 | |
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| 146 | bal _writeasm |
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| 147 | li a0, 'E' |
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| 148 | bal _writeasm |
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| 149 | li a0, 'L' |
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| 150 | |
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| 151 | /* clear bss segment */ |
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| 152 | la a0,_fbss |
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| 153 | la a1,_end |
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| 154 | subu a1,a1,a0 |
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| 155 | |
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| 156 | beqz a1, 2f |
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| 157 | nop |
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| 158 | 1: |
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| 159 | sw zero,0(a0) |
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| 160 | sub a1, a1, 4 |
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| 161 | addi a0, a0, 4 |
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| 162 | bnez a1, 1b |
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| 163 | nop |
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| 164 | 2: |
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| 165 | la sp, (bl_stack + BL_STACK_SIZE - 48) |
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| 166 | |
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| 167 | la a0, _stage2_start |
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| 168 | la a1, __start_s2 |
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| 169 | la a2, _stage2_size |
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| 170 | bal aligned_copy |
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| 171 | nop |
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| 172 | bal _writeasm |
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| 173 | li a0, 'L' |
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| 174 | |
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| 175 | /* index-writeback-invalidate-d */ |
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| 176 | bal clear_all_d_cache |
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| 177 | nop |
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| 178 | jal stage1_main |
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| 179 | nop |
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| 180 | bal _writeasm |
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| 181 | li a0, 'O' |
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| 182 | |
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| 183 | la t0,__start_s2 |
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| 184 | or t0, 0x20000000 |
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| 185 | jalr t0 |
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| 186 | nop |
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| 187 | loop: |
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| 188 | b loop |
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| 189 | nop |
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| 190 | |
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| 191 | |
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| 192 | LEAF(aligned_copy) |
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| 193 | |
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| 194 | 1: |
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| 195 | lw v0, 0(a0) |
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| 196 | addiu a2, a2, -4 |
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| 197 | sw v0, 0(a1) |
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| 198 | addiu a0, a0, 4 |
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| 199 | bnez a2, 1b |
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| 200 | addiu a1, a1, 4 |
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| 201 | |
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| 202 | jr ra |
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| 203 | nop |
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| 204 | |
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| 205 | END(aligned_copy) |
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| 206 | |
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| 207 | .if 0 |
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| 208 | /* test routine */ |
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| 209 | LEAF(word_compare) |
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| 210 | |
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| 211 | 1: |
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| 212 | lw v0, 0(a0) |
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| 213 | addiu a2, a2, -4 |
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| 214 | lw v1, 0(a1) |
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| 215 | 2: |
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| 216 | bne v0,v1, 2b |
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| 217 | nop |
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| 218 | |
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| 219 | addiu a0, a0, 4 |
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| 220 | bnez a2, 1b |
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| 221 | addiu a1, a1, 4 |
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| 222 | |
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| 223 | jr ra |
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| 224 | nop |
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| 225 | |
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| 226 | END(word_compare) |
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| 227 | .endif |
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| 228 | |
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| 229 | #include "uart.s" |
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| 230 | #include "chip.s" |
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| 231 | #undef RelAddrPrintChar |
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| 232 | #undef RelAddrPrintHex32 |
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| 233 | #undef SHMOO_STACK_START |
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| 234 | #undef SHMOO_STACK_SIZE |
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| 235 | #include "common_routines.s" |
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| 236 | #include "memc_0_client_prog.s" |
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| 237 | #include "memc_0_access.s" |
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| 238 | #include "run_shmoo.s" |
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| 239 | #include "cache_lib.s" |
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| 240 | #include "mips_libs.s" |
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| 241 | #if defined(BOOT_SCRAMBLE_DRAM) |
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| 242 | #undef REG |
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| 243 | #if (BCHP_VER<BCHP_VER_B0) |
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| 244 | #include "scramble_dram.s" |
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| 245 | #endif |
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| 246 | #endif |
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