bms2003.h 18 KB

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  1. /*
  2. * (C) Copyright 2000-2003
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. /*
  24. * board/config.h - configuration options, board specific
  25. */
  26. #ifndef __CONFIG_H
  27. #define __CONFIG_H
  28. /*
  29. * High Level Configuration Options
  30. * (easy to change)
  31. */
  32. #define CONFIG_BMS2003
  33. #define CONFIG_MPC823 1 /* This is a MPC823 CPU */
  34. #define CONFIG_TQM823L 1 /* ...on a TQM8xxL module */
  35. #define CONFIG_LCD
  36. #define CONFIG_NEC_NL6448BC33_54 /* NEC NL6448BC33_54 display */
  37. #ifdef CONFIG_LCD /* with LCD controller ? */
  38. #define CONFIG_SPLASH_SCREEN /* ... with splashscreen support*/
  39. #endif
  40. #define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
  41. #undef CONFIG_8xx_CONS_SMC2
  42. #undef CONFIG_8xx_CONS_NONE
  43. #define CONFIG_BAUDRATE 115200 /* console baudrate = 115kbps */
  44. #define CONFIG_PS2KBD /* AT-PS/2 Keyboard */
  45. #define CONFIG_PS2MULT /* .. on PS/2 Multiplexer */
  46. #define CONFIG_PS2SERIAL 2 /* .. on COM3 */
  47. #define CONFIG_BOOTCOUNT_LIMIT
  48. #define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
  49. #define CONFIG_BOARD_TYPES 1 /* support board types */
  50. #define CONFIG_PREBOOT "echo;echo Type \"run flash_nfs\" to mount root filesystem over NFS;echo"
  51. #undef CONFIG_BOOTARGS
  52. #define CONFIG_EXTRA_ENV_SETTINGS \
  53. "netdev=eth0\0" \
  54. "nfsargs=setenv bootargs root=/dev/nfs rw " \
  55. "nfsroot=$(serverip):$(rootpath)\0" \
  56. "ramargs=setenv bootargs root=/dev/ram rw\0" \
  57. "addip=setenv bootargs $(bootargs) " \
  58. "ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
  59. ":$(hostname):$(netdev):off panic=1\0" \
  60. "flash_nfs=run nfsargs addip;" \
  61. "bootm $(kernel_addr)\0" \
  62. "flash_self=run ramargs addip;" \
  63. "bootm $(kernel_addr) $(ramdisk_addr)\0" \
  64. "net_nfs=tftp 200000 $(bootfile);run nfsargs addip;bootm\0" \
  65. "rootpath=/opt/eldk/ppc_8xx\0" \
  66. "bootfile=/tftpboot/TQM860L/uImage\0" \
  67. "kernel_addr=40040000\0" \
  68. "ramdisk_addr=40100000\0" \
  69. ""
  70. #define CONFIG_BOOTCOMMAND "run flash_self"
  71. #define CONFIG_MISC_INIT_R 1
  72. #define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
  73. #undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
  74. /* enable I2C and select the hardware/software driver */
  75. #undef CONFIG_HARD_I2C /* I2C with hardware support */
  76. #define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
  77. #define CFG_I2C_SPEED 40000 /* 40 kHz is supposed to work */
  78. #define CFG_I2C_SLAVE 0xFE
  79. /* Software (bit-bang) I2C driver configuration */
  80. #define PB_SCL 0x00000020 /* PB 26 */
  81. #define PB_SDA 0x00000010 /* PB 27 */
  82. #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL)
  83. #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA)
  84. #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA)
  85. #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
  86. #define I2C_SDA(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \
  87. else immr->im_cpm.cp_pbdat &= ~PB_SDA
  88. #define I2C_SCL(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \
  89. else immr->im_cpm.cp_pbdat &= ~PB_SCL
  90. #define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */
  91. #undef CONFIG_WATCHDOG /* watchdog disabled */
  92. #define CONFIG_STATUS_LED 1 /* Status LED enabled */
  93. #define CONFIG_CAN_DRIVER 1 /* CAN Driver support enabled */
  94. #define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | CONFIG_BOOTP_BOOTFILESIZE)
  95. #define CONFIG_MAC_PARTITION
  96. #define CONFIG_DOS_PARTITION
  97. #define CONFIG_RTC_DS1337 /* Use ds1337 rtc via i2c */
  98. #define CFG_I2C_RTC_ADDR 0x68 /* at address 0x68 */
  99. #ifdef CONFIG_SPLASH_SCREEN
  100. # define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
  101. CFG_CMD_ASKENV | \
  102. CFG_CMD_BMP | \
  103. CFG_CMD_DATE | \
  104. CFG_CMD_DHCP | \
  105. CFG_CMD_I2C | \
  106. CFG_CMD_IDE )
  107. #else
  108. # define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
  109. CFG_CMD_ASKENV | \
  110. CFG_CMD_DATE | \
  111. CFG_CMD_DHCP | \
  112. CFG_CMD_I2C | \
  113. CFG_CMD_IDE )
  114. #endif
  115. /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
  116. #include <cmd_confdefs.h>
  117. /*
  118. * Miscellaneous configurable options
  119. */
  120. #define CFG_LONGHELP /* undef to save memory */
  121. #define CFG_PROMPT "=> " /* Monitor Command Prompt */
  122. #if 0
  123. #define CFG_HUSH_PARSER 1 /* use "hush" command parser */
  124. #endif
  125. #ifdef CFG_HUSH_PARSER
  126. #define CFG_PROMPT_HUSH_PS2 "> "
  127. #endif
  128. #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  129. #define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
  130. #else
  131. #define CFG_CBSIZE 256 /* Console I/O Buffer Size */
  132. #endif
  133. #define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
  134. #define CFG_MAXARGS 16 /* max number of command args */
  135. #define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
  136. #define CFG_MEMTEST_START 0x0400000 /* memtest works on */
  137. #define CFG_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
  138. #define CFG_LOAD_ADDR 0x100000 /* default load address */
  139. #define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
  140. #define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
  141. /*
  142. * Low Level Configuration Settings
  143. * (address mappings, register initial values, etc.)
  144. * You should know what you are doing if you make changes here.
  145. */
  146. /*-----------------------------------------------------------------------
  147. * Internal Memory Mapped Register
  148. */
  149. #define CFG_IMMR 0xFFF00000
  150. /*-----------------------------------------------------------------------
  151. * Definitions for initial stack pointer and data area (in DPRAM)
  152. */
  153. #define CFG_INIT_RAM_ADDR CFG_IMMR
  154. #define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
  155. #define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
  156. #define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
  157. #define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
  158. /*-----------------------------------------------------------------------
  159. * Start addresses for the final memory configuration
  160. * (Set up by the startup code)
  161. * Please note that CFG_SDRAM_BASE _must_ start at 0
  162. */
  163. #define CFG_SDRAM_BASE 0x00000000
  164. #define CFG_FLASH_BASE 0x40000000
  165. #define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
  166. #define CFG_MONITOR_BASE CFG_FLASH_BASE
  167. #define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
  168. /*
  169. * For booting Linux, the board info and command line data
  170. * have to be in the first 8 MB of memory, since this is
  171. * the maximum mapped by the Linux kernel during initialization.
  172. */
  173. #define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
  174. /*-----------------------------------------------------------------------
  175. * FLASH organization
  176. */
  177. #define CFG_MAX_FLASH_BANKS 2 /* max number of memory banks */
  178. #define CFG_MAX_FLASH_SECT 71 /* max number of sectors on one chip */
  179. #define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
  180. #define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
  181. #define CFG_ENV_IS_IN_FLASH 1
  182. #define CFG_ENV_OFFSET 0x8000 /* Offset of Environment Sector */
  183. #define CFG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */
  184. /* Address and size of Redundant Environment Sector */
  185. #define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SIZE)
  186. #define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
  187. /*-----------------------------------------------------------------------
  188. * Hardware Information Block
  189. */
  190. #define CFG_HWINFO_OFFSET 0x0003FFC0 /* offset of HW Info block */
  191. #define CFG_HWINFO_SIZE 0x00000040 /* size of HW Info block */
  192. #define CFG_HWINFO_MAGIC 0x54514D38 /* 'TQM8' */
  193. /*-----------------------------------------------------------------------
  194. * Cache Configuration
  195. */
  196. #define CFG_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
  197. #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  198. #define CFG_CACHELINE_SHIFT 4 /* log base 2 of the above value */
  199. #endif
  200. /*-----------------------------------------------------------------------
  201. * SYPCR - System Protection Control 11-9
  202. * SYPCR can only be written once after reset!
  203. *-----------------------------------------------------------------------
  204. * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
  205. */
  206. #if defined(CONFIG_WATCHDOG)
  207. #define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
  208. SYPCR_SWE | SYPCR_SWRI| SYPCR_SWP)
  209. #else
  210. #define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
  211. #endif
  212. /*-----------------------------------------------------------------------
  213. * SIUMCR - SIU Module Configuration 11-6
  214. *-----------------------------------------------------------------------
  215. * PCMCIA config., multi-function pin tri-state
  216. */
  217. #ifndef CONFIG_CAN_DRIVER
  218. #define CFG_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
  219. #else /* we must activate GPL5 in the SIUMCR for CAN */
  220. #define CFG_SIUMCR (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
  221. #endif /* CONFIG_CAN_DRIVER */
  222. /*-----------------------------------------------------------------------
  223. * TBSCR - Time Base Status and Control 11-26
  224. *-----------------------------------------------------------------------
  225. * Clear Reference Interrupt Status, Timebase freezing enabled
  226. */
  227. #define CFG_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
  228. /*-----------------------------------------------------------------------
  229. * RTCSC - Real-Time Clock Status and Control Register 11-27
  230. *-----------------------------------------------------------------------
  231. */
  232. #define CFG_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
  233. /*-----------------------------------------------------------------------
  234. * PISCR - Periodic Interrupt Status and Control 11-31
  235. *-----------------------------------------------------------------------
  236. * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
  237. */
  238. #define CFG_PISCR (PISCR_PS | PISCR_PITF)
  239. /*-----------------------------------------------------------------------
  240. * PLPRCR - PLL, Low-Power, and Reset Control Register 15-30
  241. *-----------------------------------------------------------------------
  242. * Reset PLL lock status sticky bit, timer expired status bit and timer
  243. * interrupt status bit
  244. *
  245. * If this is a 80 MHz CPU, set PLL multiplication factor to 5 (5*16=80)!
  246. */
  247. #ifdef CONFIG_80MHz /* for 80 MHz, we use a 16 MHz clock * 5 */
  248. #define CFG_PLPRCR \
  249. ( (5-1)<<PLPRCR_MF_SHIFT | PLPRCR_TEXPS | PLPRCR_TMIST )
  250. #else /* up to 66 MHz we use a 1:1 clock */
  251. #define CFG_PLPRCR (PLPRCR_SPLSS | PLPRCR_TEXPS | PLPRCR_TMIST)
  252. #endif /* CONFIG_80MHz */
  253. /*-----------------------------------------------------------------------
  254. * SCCR - System Clock and reset Control Register 15-27
  255. *-----------------------------------------------------------------------
  256. * Set clock output, timebase and RTC source and divider,
  257. * power management and some other internal clocks
  258. */
  259. #define SCCR_MASK SCCR_EBDF11
  260. #ifdef CONFIG_80MHz /* for 80 MHz, we use a 16 MHz clock * 5 */
  261. #define CFG_SCCR (/* SCCR_TBS | */ \
  262. SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
  263. SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
  264. SCCR_DFALCD00)
  265. #else /* up to 66 MHz we use a 1:1 clock */
  266. #define CFG_SCCR (SCCR_TBS | \
  267. SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
  268. SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
  269. SCCR_DFALCD00)
  270. #endif /* CONFIG_80MHz */
  271. /*-----------------------------------------------------------------------
  272. * PCMCIA stuff
  273. *-----------------------------------------------------------------------
  274. *
  275. */
  276. #ifndef CONFIG_BMS2003
  277. #define CFG_PCMCIA_MEM_ADDR (0xE0000000)
  278. #define CFG_PCMCIA_MEM_SIZE ( 64 << 20 )
  279. #define CFG_PCMCIA_DMA_ADDR (0xE4000000)
  280. #define CFG_PCMCIA_DMA_SIZE ( 64 << 20 )
  281. #define CFG_PCMCIA_ATTRB_ADDR (0xE8000000)
  282. #define CFG_PCMCIA_ATTRB_SIZE ( 64 << 20 )
  283. #define CFG_PCMCIA_IO_ADDR (0xEC000000)
  284. #define CFG_PCMCIA_IO_SIZE ( 64 << 20 )
  285. #else /* CONFIG_BMS2003 */
  286. #define CFG_PCMCIA_MEM_ADDR (0xE0100000)
  287. #define CFG_PCMCIA_MEM_SIZE ( 64 << 20 )
  288. #define CFG_PCMCIA_DMA_ADDR (0xE4100000)
  289. #define CFG_PCMCIA_DMA_SIZE ( 64 << 20 )
  290. #define CFG_PCMCIA_ATTRB_ADDR (0xE8100000)
  291. #define CFG_PCMCIA_ATTRB_SIZE ( 64 << 20 )
  292. #define CFG_PCMCIA_IO_ADDR (0xEC100000)
  293. #define CFG_PCMCIA_IO_SIZE ( 64 << 20 )
  294. #define NSCU_OE_INV 1 /* PCMCIA_GCRX_CXOE is inverted */
  295. #endif
  296. /*-----------------------------------------------------------------------
  297. * IDE/ATA stuff (Supports IDE harddisk on PCMCIA Adapter)
  298. *-----------------------------------------------------------------------
  299. */
  300. #define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
  301. #undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
  302. #undef CONFIG_IDE_RESET /* reset for ide not supported */
  303. #ifndef CONFIG_STATUS_LED /* Status and IDE LED's are mutually exclusive */
  304. #define CONFIG_IDE_LED 1 /* LED for ide supported */
  305. #endif
  306. #define CFG_IDE_MAXBUS 1 /* max. 1 IDE bus */
  307. #define CFG_IDE_MAXDEVICE 1 /* max. 1 drive per IDE bus */
  308. #define CFG_ATA_IDE0_OFFSET 0x0000
  309. #define CFG_ATA_BASE_ADDR CFG_PCMCIA_MEM_ADDR
  310. /* Offset for data I/O */
  311. #define CFG_ATA_DATA_OFFSET (CFG_PCMCIA_MEM_SIZE + 0x320)
  312. /* Offset for normal register accesses */
  313. #define CFG_ATA_REG_OFFSET (2 * CFG_PCMCIA_MEM_SIZE + 0x320)
  314. /* Offset for alternate registers */
  315. #define CFG_ATA_ALT_OFFSET 0x0100
  316. /*-----------------------------------------------------------------------
  317. *
  318. *-----------------------------------------------------------------------
  319. *
  320. */
  321. #define CFG_DER 0
  322. /*
  323. * Init Memory Controller:
  324. *
  325. * BR0/1 and OR0/1 (FLASH)
  326. */
  327. #define FLASH_BASE0_PRELIM 0x40000000 /* FLASH bank #0 */
  328. #define FLASH_BASE1_PRELIM 0x60000000 /* FLASH bank #0 */
  329. /* used to re-map FLASH both when starting from SRAM or FLASH:
  330. * restrict access enough to keep SRAM working (if any)
  331. * but not too much to meddle with FLASH accesses
  332. */
  333. #define CFG_REMAP_OR_AM 0x80000000 /* OR addr mask */
  334. #define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
  335. /*
  336. * FLASH timing:
  337. */
  338. #if defined(CONFIG_80MHz)
  339. /* 80 MHz CPU - 40 MHz bus: ACS = 00, TRLX = 0, CSNT = 1, SCY = 3, EHTR = 1 */
  340. #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | 0 | OR_CSNT_SAM | \
  341. OR_SCY_3_CLK | OR_EHTR | OR_BI)
  342. #elif defined(CONFIG_66MHz)
  343. /* 66 MHz CPU - 66 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 3, EHTR = 1 */
  344. #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
  345. OR_SCY_3_CLK | OR_EHTR | OR_BI)
  346. #else /* 50 MHz */
  347. /* 50 MHz CPU - 50 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 2, EHTR = 1 */
  348. #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
  349. OR_SCY_2_CLK | OR_EHTR | OR_BI)
  350. #endif /*CONFIG_??MHz */
  351. #define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH)
  352. #define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
  353. #define CFG_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )
  354. #define CFG_OR1_REMAP CFG_OR0_REMAP
  355. #define CFG_OR1_PRELIM CFG_OR0_PRELIM
  356. #define CFG_BR1_PRELIM ((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_V )
  357. /*
  358. * BR2/3 and OR2/3 (SDRAM)
  359. *
  360. */
  361. #define SDRAM_BASE2_PRELIM 0x00000000 /* SDRAM bank #0 */
  362. #define SDRAM_BASE3_PRELIM 0x20000000 /* SDRAM bank #1 */
  363. #define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
  364. /* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care) */
  365. #define CFG_OR_TIMING_SDRAM 0x00000A00
  366. #define CFG_OR2_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
  367. #define CFG_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
  368. #ifndef CONFIG_CAN_DRIVER
  369. #define CFG_OR3_PRELIM CFG_OR2_PRELIM
  370. #define CFG_BR3_PRELIM ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
  371. #else /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
  372. #define CFG_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
  373. #define CFG_CAN_OR_AM 0xFFFF8000 /* 32 kB address mask */
  374. #define CFG_OR3_CAN (CFG_CAN_OR_AM | OR_G5LA | OR_BI)
  375. #define CFG_BR3_CAN ((CFG_CAN_BASE & BR_BA_MSK) | \
  376. BR_PS_8 | BR_MS_UPMB | BR_V )
  377. #endif /* CONFIG_CAN_DRIVER */
  378. /*
  379. * Memory Periodic Timer Prescaler
  380. *
  381. * The Divider for PTA (refresh timer) configuration is based on an
  382. * example SDRAM configuration (64 MBit, one bank). The adjustment to
  383. * the number of chip selects (NCS) and the actually needed refresh
  384. * rate is done by setting MPTPR.
  385. *
  386. * PTA is calculated from
  387. * PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
  388. *
  389. * gclk CPU clock (not bus clock!)
  390. * Trefresh Refresh cycle * 4 (four word bursts used)
  391. *
  392. * 4096 Rows from SDRAM example configuration
  393. * 1000 factor s -> ms
  394. * 32 PTP (pre-divider from MPTPR) from SDRAM example configuration
  395. * 4 Number of refresh cycles per period
  396. * 64 Refresh cycle in ms per number of rows
  397. * --------------------------------------------
  398. * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
  399. *
  400. * 50 MHz => 50.000.000 / Divider = 98
  401. * 66 Mhz => 66.000.000 / Divider = 129
  402. * 80 Mhz => 80.000.000 / Divider = 156
  403. */
  404. #if defined(CONFIG_80MHz)
  405. #define CFG_MAMR_PTA 156
  406. #elif defined(CONFIG_66MHz)
  407. #define CFG_MAMR_PTA 129
  408. #else /* 50 MHz */
  409. #define CFG_MAMR_PTA 98
  410. #endif /*CONFIG_??MHz */
  411. /*
  412. * For 16 MBit, refresh rates could be 31.3 us
  413. * (= 64 ms / 2K = 125 / quad bursts).
  414. * For a simpler initialization, 15.6 us is used instead.
  415. *
  416. * #define CFG_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks
  417. * #define CFG_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank
  418. */
  419. #define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
  420. #define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
  421. /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
  422. #define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
  423. #define CFG_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
  424. /*
  425. * MAMR settings for SDRAM
  426. */
  427. /* 8 column SDRAM */
  428. #define CFG_MAMR_8COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
  429. MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
  430. MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
  431. /* 9 column SDRAM */
  432. #define CFG_MAMR_9COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
  433. MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
  434. MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
  435. /*
  436. * Internal Definitions
  437. *
  438. * Boot Flags
  439. */
  440. #define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
  441. #define BOOTFLAG_WARM 0x02 /* Software reboot */
  442. #endif /* __CONFIG_H */