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uboot-vybrid_pu...
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board
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MAI
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AmigaOneG3SE
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start.txt

start.txt 5.9 KB
Түүх Анхны өгөгдөл

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  1. 

  2. 	/*------------------------------------------------------*/
    3. 

  3. 	/*              TERON Articia / SDRAM Init              */
    4. 

  4. 	/*------------------------------------------------------*/
    5. 

  5. 

  6. *       XD_CTL  = 0x81000000			(0x74)
    7. 

  7. 

  8. *       HBUS_ACC_CTL_0 &= 0xFFFFFDFF		(0x5c)
    9. 

  9. 		       /* host bus access ctl reg 2(5e) */
    10. 

  10. 		       /* set - CPU read from memory data one clock after data is latched */
    11. 

  11. 

  12. *       GLOBL_INFO_0 |= 0x00004000		(0x50)
    13. 

  13. 		      /* global info register 2 (52), AGP/PCI bus 1 arbiter is addressed in Articia S */
    14. 

  14. 

  15. 	PCI_1_SB_CONFIG_0 |= 0x00000400         (0x80d0)
    16. 

  16. 			/* PCI1 side band config reg 2 (d2), enable read acces while write buffer not empty */
    17. 

  17. 

  18. 	MEM_RAS_CTL_0 |= 0x3f000000		(0xcc)
    19. 

  19. 		      &= 0x3fffffff
    20. 

  20. 		      /* RAS park control reg 0(cc), park access enable is set */
    21. 

  21. 

  22. 	HOST_RDBUF_CTL |= 0x10000000		(0x70)
    23. 

  23. 		       &= 0x10ffffff
    24. 

  24. 		      /* host read buffer control reg, enable prefetch for CPU read from DRAM control */
    25. 

  25. 

  26. 	HBUS_ACC_CTL_0 |= 0x0100001f		(0x5c)
    27. 

  27. 		       &= 0xf1ffffff
    28. 

  28. 		      /* host bus access control register, enable CPU address bus pipe control	*/
    29. 

  29. 		      /* two outstanding requests,  *** changed to 2 from 3				*/
    30. 

  30. 		      /* enable line merge write control for CPU write to system memory, PCI 1	*/
    31. 

  31. 		      /* and PCI 0 bus memory; enable page merge write control for write to		*/
    32. 

  32. 		      /* PCI bus 0 & bus 1 memory							*/
    33. 

  33. 

  34. 	SRAM_CTL |= 0x00004000			(0xc8)
    35. 

  35. 		 &= 0xffbff7ff
    36. 

  36. 		      /* DRAM detail timing control register 1 (ca), bit 3 set to 0	*/
    37. 

  37. 		      /* DRAM start access latency control - wait for one clock	*/
    38. 

  38. 		      /* ff9f changed to ffbf						*/
    39. 

  39. 

  40. 	DIM0_TIM_CTL_0 = 0x737d737d             (0xc9)
    41. 

  41. 		      /* DRAM timing control for dimm0 & dimm1; set wait one clock	*/
    42. 

  42. 		      /* cycle for next data access					*/
    43. 

  43. 

  44. 	DIM2_TIM_CTL_0 = 0x737d737d             (0xca)
    45. 

  45. 		      /* DRAM timing control for dimm2 & dimm3; set wait one clock	*/
    46. 

  46. 		      /* cycle for next data access					*/
    47. 

  47. 

  48. 	DIM0_BNK0_CTL_0 = BNK0_RAM_SIZ_128MB    (0x90)
    49. 

  49. 		      /* set dimm0 bank0 for 128 MB	*/
    50. 

  50. 

  51. 	DIM0_BNK1_CTL_0 = BNK1_RAM_SIZ_128MB    (0x94)
    52. 

  52. 		      /* set dimm0 for  bank1		*/
    53. 

  53. 

  54. 	DIM0_TIM_CTL_0 = 0xf3bf0000             (0xc9)
    55. 

  55. 		      /* dimm0 timing control register; RAS - CAS latency - 4 clock		*/
    56. 

  56. 		      /* CAS access latency - 3 wait; pre-charge latency - 3 wait		*/
    57. 

  57. 		      /* pre-charge command period control - 5 clock; wait one clock		*/
    58. 

  58. 		      /* cycle for next data access; read to write access latency control	*/
    59. 

  59. 		      /* - 2 clock cycles							*/
    60. 

  60. 

  61. 	DRAM_GBL_CTL_0 |= 0x00000100            (0xc0)
    62. 

  62. 		       &= 0xffff01ff
    63. 

  63. 		      /* memory global control register - support buffer sdram on bank 0	*/
    64. 

  64. 

  65. 	DRAM_ECC_CTL_0 |= 0x00260000		(0xc4)
    66. 

  66. 		       &= 0xff26ffff
    67. 

  67. 		      /* enable ECC; enable read, modify, write control	*/
    68. 

  68. 

  69. 	DRAM_REF_CTL_0 = DRAM_REF_DATA          (0xb8)
    70. 

  70. 		      /* set DRAM refresh parameters *** changed to 00940100	*/
    71. 

  71. 

  72. 	nop
    73. 

  73. 	nop
    74. 

  74. 	nop
    75. 

  75. 	nop
    76. 

  76. 	nop
    77. 

  77. 

  78. 	DRAM_ECC_CTL_0 |= 0x20243280		(0xc4)
    79. 

  79. 		      /* turn off ecc		*/
    80. 

  80. 		      /* for SDRAM bank 0	*/
    81. 

  81. 

  82. 	DRAM_ECC_CTL_0 |= 0x20243290            (0xc4) ?
    83. 

  83. 		      /* for SDRAM bank 1	*/
    84. 

  84. 

  85. 

  86. /* Additional Stuff...*/
    87. 

  87. 

  88. 	GLOBL_CTRL |= 0x20000b00		(0x54)
    89. 

  89. 

  90. 	PCI_0_SB_CONFIG |= 0x04100007		(0xd0)
    91. 

  91. 		      /* PCI 0 Side band config reg*/
    92. 

  92. 

  93. 	0x8000083c |= 0x00080000
    94. 

  94. 		      /* Disable VGA decode on PCI Bus 1 */
    95. 

  95. 

  96. 

  97. /*End Additional Stuff..*/
    98. 

  98. 

  99. 	/*--------------------------------------------------------------*/
    100. 

  100. 	/*              TERON serial port initialization code           */
    101. 

  101. 	/*--------------------------------------------------------------*/
    102. 

  102. 

  103. 	0x84380080 |= 0x00030000
    104. 

  104. 		     /* enable super IO configuration VIA chip Register 85	*/
    105. 

  105. 		     /* Enable super I/O config mode */
    106. 

  106. 

  107. 	0xfe0003f0 = 0xe2
    108. 

  108. 	bl delay1
    109. 

  109. 

  110. 	0xfe0003f1 = 0x0f
    111. 

  111. 	bl delay1
    112. 

  112. 		    /* enable com1 & com2, parallel port disabled */
    113. 

  113. 

  114. 	0xfe0003f0 = 0xe7
    115. 

  115. 	bl delay1
    116. 

  116. 		    /* let's make com1 base as 0x3f8 */
    117. 

  117. 

  118. 	0xfe0003f1 = 0xfe
    119. 

  119. 	bl delay1
    120. 

  120. 

  121. 	0xfe0003f0 = 0xe8
    122. 

  122. 	bl delay1
    123. 

  123. 		    /* let's make com2 base as 0x2f8 */
    124. 

  124. 

  125. 	0xfe0003f1 = 0xbe
    126. 

  126. 

  127. 	0x84380080 &= 0xfffdffff
    128. 

  128. 		    /* closing super IO configuration VIA chip Register 85   */
    129. 

  129. 

  130. 

  131. /* -------------------------------*/
    132. 

  132. 

  133. 	0xfe0003fb = 0x83
    134. 

  134. 	bl delay1
    135. 

  135. 		   /*latch enable word length -8 bit */         /* set mslab bit	*/
    136. 

  136. 	0xfe0003f8 = 0x0c
    137. 

  137. 	bl delay1
    138. 

  138. 		   /* set baud rate lsb for 9600 baud	*/
    139. 

  139. 	0xfe0003f9 = 0x0
    140. 

  140. 	bl delay1
    141. 

  141. 		   /* set baud rate msb for 9600 baud	*/
    142. 

  142. 	0xfe0003fb  = 0x03
    143. 

  143. 	bl delay1
    144. 

  144. 		      /* reset mslab	*/
    145. 

  145. 

  146. 	/*--------------------------------------------------------------*/
    147. 

  147. 	/*              END TERON Serial Port Initialization Code       */
    148. 

  148. 	/*--------------------------------------------------------------*/
    149. 

  149. 

  150. 

  151. 	/*--------------------------------------------------------------*/
    152. 

  152. 	/*      END TERON Articia / SDRAM Initialization code           */
    153. 

  153. 	/*--------------------------------------------------------------*/
    154. 

  154. 

  155. Proposed from Documentation:
    156. 

  156. 

  157. write dmem 0xfec00cf8 0x50000080
    158. 

  158. write dmem 0xfee00cfc 0xc0305411
    159. 

  159. 

  160.       Writes to index 0x50-0x53.
    161. 

  161.       0x50: Global Information Register 0
    162. 

  162. 	    0xC0 = Little Endian CPU, Sequential order Burst
    163. 

  163.       0x51: Global Information Register 1
    164. 

  164. 	    Read only, 0x30 = Provides PowerPC and X86 support
    165. 

  165.       0x52: Global Information Register 2
    166. 

  166. 	    0x05 = 64/128 bit CPU bus support
    167. 

  167.       0x53: Global Information Register 3
    168. 

  168. 	    0x80 = PCI Bus 0 grant active time is 1 clock after REQ# deasserted
    169. 

  169. 

  170. write dmem 0xfec00cf8 0x5c000080
    171. 

  171. write dmem 0xfee00cfc 0xb300011F
    172. 

  172. 

  173. write dmem 0xfec00cf8 0xc8000080
    174. 

  174. write dmem 0xfee00cfc 0x0020f100
    175. 

  175. 

  176. write dmem 0xfec00cf8 0x90000080
    177. 

  177. write dmem 0xfee00cfc 0x007fe700
    178. 

  178. 

  179. write dmem 0xfec00cf8 0x9400080
    180. 

  180. write dmem 0xfee00cfc 0x007fe700
    181. 

  181. 

  182. write dmem 0xfec00cf8 0xb0000080
    183. 

  183. write dmem 0xfee00cfc 0x737d737d
    184. 

  184. 

  185. write dmem 0xfec00cf8 0xb4000080
    186. 

  186. write dmem 0xfee00cfc 0x737d737d
    187. 

  187. 

  188. write dmem 0xfec00cf8 0xc0000080
    189. 

  189. write dmem 0xfee00cfc 0x40005500
    190. 

  190. 

  191. write dmem 0xfec00cf8 0xb8000080
    192. 

  192. write dmem 0xfee00cfc 0x00940100
    193. 

  193. 

  194. write dmem 0xfec00cf8 0xc4000080
    195. 

  195. write dmem 0xfee00cfc 0x00003280
    196. 

  196. 

  197. write dmem 0xfec00cf8 0xc4000080
    198. 

  198. write dmem 0xfee00cfc 0x00003290
    199.