HMI10.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_HMI10
  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_PS2MULT_DELAY (CFG_HZ/2) /* Initial delay */
  48. #define CONFIG_BOOTCOUNT_LIMIT
  49. #define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
  50. #define CONFIG_BOARD_TYPES 1 /* support board types */
  51. #define CONFIG_PREBOOT "echo;echo Type \"run flash_nfs\" to mount root filesystem over NFS;echo"
  52. #undef CONFIG_BOOTARGS
  53. #define CONFIG_EXTRA_ENV_SETTINGS \
  54. "netdev=eth0\0" \
  55. "nfsargs=setenv bootargs root=/dev/nfs rw " \
  56. "nfsroot=$(serverip):$(rootpath)\0" \
  57. "ramargs=setenv bootargs root=/dev/ram rw\0" \
  58. "addip=setenv bootargs $(bootargs) " \
  59. "ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)" \
  60. ":$(hostname):$(netdev):off panic=1\0" \
  61. "flash_nfs=run nfsargs addip;" \
  62. "bootm $(kernel_addr)\0" \
  63. "flash_self=run ramargs addip;" \
  64. "bootm $(kernel_addr) $(ramdisk_addr)\0" \
  65. "net_nfs=tftp 200000 $(bootfile);run nfsargs addip;bootm\0" \
  66. "rootpath=/opt/eldk/ppc_8xx\0" \
  67. "bootfile=/tftpboot/HMI10/uImage\0" \
  68. "kernel_addr=40040000\0" \
  69. "ramdisk_addr=40100000\0" \
  70. ""
  71. #define CONFIG_BOOTCOMMAND "run flash_self"
  72. #define CONFIG_BOARD_EARLY_INIT_R 1
  73. #define CONFIG_MISC_INIT_R 1
  74. #define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
  75. #undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
  76. /* enable I2C and select the hardware/software driver */
  77. #undef CONFIG_HARD_I2C /* I2C with hardware support */
  78. #define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
  79. #define CFG_I2C_SPEED 40000 /* 40 kHz is supposed to work */
  80. #define CFG_I2C_SLAVE 0xFE
  81. /* Software (bit-bang) I2C driver configuration */
  82. #define PB_SCL 0x00000020 /* PB 26 */
  83. #define PB_SDA 0x00000010 /* PB 27 */
  84. #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL)
  85. #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA)
  86. #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA)
  87. #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
  88. #define I2C_SDA(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \
  89. else immr->im_cpm.cp_pbdat &= ~PB_SDA
  90. #define I2C_SCL(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \
  91. else immr->im_cpm.cp_pbdat &= ~PB_SCL
  92. #define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */
  93. #undef CONFIG_WATCHDOG /* watchdog disabled */
  94. #define CONFIG_STATUS_LED 1 /* Status LED enabled */
  95. #define CONFIG_CAN_DRIVER 1 /* CAN Driver support enabled */
  96. #define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | CONFIG_BOOTP_BOOTFILESIZE)
  97. #define CONFIG_MAC_PARTITION
  98. #define CONFIG_DOS_PARTITION
  99. #define CONFIG_RTC_DS1337 /* Use ds1337 rtc via i2c */
  100. #define CFG_I2C_RTC_ADDR 0x68 /* at address 0x68 */
  101. #ifdef CONFIG_SPLASH_SCREEN
  102. # define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
  103. CFG_CMD_ASKENV | \
  104. CFG_CMD_BMP | \
  105. CFG_CMD_DATE | \
  106. CFG_CMD_DHCP | \
  107. CFG_CMD_I2C | \
  108. CFG_CMD_IDE )
  109. #else
  110. # define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
  111. CFG_CMD_ASKENV | \
  112. CFG_CMD_DATE | \
  113. CFG_CMD_DHCP | \
  114. CFG_CMD_I2C | \
  115. CFG_CMD_IDE )
  116. #endif
  117. /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
  118. #include <cmd_confdefs.h>
  119. /*
  120. * Miscellaneous configurable options
  121. */
  122. #define CFG_LONGHELP /* undef to save memory */
  123. #define CFG_PROMPT "=> " /* Monitor Command Prompt */
  124. #if 0
  125. #define CFG_HUSH_PARSER 1 /* use "hush" command parser */
  126. #endif
  127. #ifdef CFG_HUSH_PARSER
  128. #define CFG_PROMPT_HUSH_PS2 "> "
  129. #endif
  130. #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  131. #define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
  132. #else
  133. #define CFG_CBSIZE 256 /* Console I/O Buffer Size */
  134. #endif
  135. #define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
  136. #define CFG_MAXARGS 16 /* max number of command args */
  137. #define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
  138. #define CFG_MEMTEST_START 0x0400000 /* memtest works on */
  139. #define CFG_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
  140. #define CFG_LOAD_ADDR 0x100000 /* default load address */
  141. #define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
  142. #define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
  143. /*
  144. * Low Level Configuration Settings
  145. * (address mappings, register initial values, etc.)
  146. * You should know what you are doing if you make changes here.
  147. */
  148. /*-----------------------------------------------------------------------
  149. * Internal Memory Mapped Register
  150. */
  151. #define CFG_IMMR 0xFFF00000
  152. /*-----------------------------------------------------------------------
  153. * Definitions for initial stack pointer and data area (in DPRAM)
  154. */
  155. #define CFG_INIT_RAM_ADDR CFG_IMMR
  156. #define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
  157. #define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
  158. #define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
  159. #define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
  160. /*-----------------------------------------------------------------------
  161. * Start addresses for the final memory configuration
  162. * (Set up by the startup code)
  163. * Please note that CFG_SDRAM_BASE _must_ start at 0
  164. */
  165. #define CFG_SDRAM_BASE 0x00000000
  166. #define CFG_FLASH_BASE 0x40000000
  167. #define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
  168. #define CFG_MONITOR_BASE CFG_FLASH_BASE
  169. #define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
  170. /*
  171. * For booting Linux, the board info and command line data
  172. * have to be in the first 8 MB of memory, since this is
  173. * the maximum mapped by the Linux kernel during initialization.
  174. */
  175. #define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
  176. /*-----------------------------------------------------------------------
  177. * FLASH organization
  178. */
  179. #define CFG_MAX_FLASH_BANKS 2 /* max number of memory banks */
  180. #define CFG_MAX_FLASH_SECT 71 /* max number of sectors on one chip */
  181. #define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
  182. #define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
  183. #define CFG_ENV_IS_IN_FLASH 1
  184. #define CFG_ENV_OFFSET 0x8000 /* Offset of Environment Sector */
  185. #define CFG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */
  186. /* Address and size of Redundant Environment Sector */
  187. #define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SIZE)
  188. #define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
  189. /*-----------------------------------------------------------------------
  190. * Hardware Information Block
  191. */
  192. #define CFG_HWINFO_OFFSET 0x0003FFC0 /* offset of HW Info block */
  193. #define CFG_HWINFO_SIZE 0x00000040 /* size of HW Info block */
  194. #define CFG_HWINFO_MAGIC 0x54514D38 /* 'TQM8' */
  195. /*-----------------------------------------------------------------------
  196. * Cache Configuration
  197. */
  198. #define CFG_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
  199. #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  200. #define CFG_CACHELINE_SHIFT 4 /* log base 2 of the above value */
  201. #endif
  202. /*-----------------------------------------------------------------------
  203. * SYPCR - System Protection Control 11-9
  204. * SYPCR can only be written once after reset!
  205. *-----------------------------------------------------------------------
  206. * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
  207. */
  208. #if defined(CONFIG_WATCHDOG)
  209. #define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
  210. SYPCR_SWE | SYPCR_SWRI| SYPCR_SWP)
  211. #else
  212. #define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
  213. #endif
  214. /*-----------------------------------------------------------------------
  215. * SIUMCR - SIU Module Configuration 11-6
  216. *-----------------------------------------------------------------------
  217. * PCMCIA config., multi-function pin tri-state
  218. */
  219. #ifndef CONFIG_CAN_DRIVER
  220. #define CFG_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
  221. #else /* we must activate GPL5 in the SIUMCR for CAN */
  222. #define CFG_SIUMCR (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
  223. #endif /* CONFIG_CAN_DRIVER */
  224. /*-----------------------------------------------------------------------
  225. * TBSCR - Time Base Status and Control 11-26
  226. *-----------------------------------------------------------------------
  227. * Clear Reference Interrupt Status, Timebase freezing enabled
  228. */
  229. #define CFG_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
  230. /*-----------------------------------------------------------------------
  231. * RTCSC - Real-Time Clock Status and Control Register 11-27
  232. *-----------------------------------------------------------------------
  233. */
  234. #define CFG_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
  235. /*-----------------------------------------------------------------------
  236. * PISCR - Periodic Interrupt Status and Control 11-31
  237. *-----------------------------------------------------------------------
  238. * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
  239. */
  240. #define CFG_PISCR (PISCR_PS | PISCR_PITF)
  241. /*-----------------------------------------------------------------------
  242. * PLPRCR - PLL, Low-Power, and Reset Control Register 15-30
  243. *-----------------------------------------------------------------------
  244. * Reset PLL lock status sticky bit, timer expired status bit and timer
  245. * interrupt status bit
  246. *
  247. * If this is a 80 MHz CPU, set PLL multiplication factor to 5 (5*16=80)!
  248. */
  249. #ifdef CONFIG_80MHz /* for 80 MHz, we use a 16 MHz clock * 5 */
  250. #define CFG_PLPRCR \
  251. ( (5-1)<<PLPRCR_MF_SHIFT | PLPRCR_TEXPS | PLPRCR_TMIST )
  252. #else /* up to 66 MHz we use a 1:1 clock */
  253. #define CFG_PLPRCR (PLPRCR_SPLSS | PLPRCR_TEXPS | PLPRCR_TMIST)
  254. #endif /* CONFIG_80MHz */
  255. /*-----------------------------------------------------------------------
  256. * SCCR - System Clock and reset Control Register 15-27
  257. *-----------------------------------------------------------------------
  258. * Set clock output, timebase and RTC source and divider,
  259. * power management and some other internal clocks
  260. */
  261. #define SCCR_MASK SCCR_EBDF11
  262. #ifdef CONFIG_80MHz /* for 80 MHz, we use a 16 MHz clock * 5 */
  263. #define CFG_SCCR (/* SCCR_TBS | */ \
  264. SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
  265. SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
  266. SCCR_DFALCD00)
  267. #else /* up to 66 MHz we use a 1:1 clock */
  268. #define CFG_SCCR (SCCR_TBS | \
  269. SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
  270. SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
  271. SCCR_DFALCD00)
  272. #endif /* CONFIG_80MHz */
  273. /*-----------------------------------------------------------------------
  274. * PCMCIA stuff
  275. *-----------------------------------------------------------------------
  276. *
  277. */
  278. #ifndef CONFIG_HMI10
  279. #define CFG_PCMCIA_MEM_ADDR (0xE0000000)
  280. #define CFG_PCMCIA_MEM_SIZE ( 64 << 20 )
  281. #define CFG_PCMCIA_DMA_ADDR (0xE4000000)
  282. #define CFG_PCMCIA_DMA_SIZE ( 64 << 20 )
  283. #define CFG_PCMCIA_ATTRB_ADDR (0xE8000000)
  284. #define CFG_PCMCIA_ATTRB_SIZE ( 64 << 20 )
  285. #define CFG_PCMCIA_IO_ADDR (0xEC000000)
  286. #define CFG_PCMCIA_IO_SIZE ( 64 << 20 )
  287. #else /* CONFIG_HMI10 */
  288. #define CFG_PCMCIA_MEM_ADDR (0xE0100000)
  289. #define CFG_PCMCIA_MEM_SIZE ( 64 << 20 )
  290. #define CFG_PCMCIA_DMA_ADDR (0xE4100000)
  291. #define CFG_PCMCIA_DMA_SIZE ( 64 << 20 )
  292. #define CFG_PCMCIA_ATTRB_ADDR (0xE8100000)
  293. #define CFG_PCMCIA_ATTRB_SIZE ( 64 << 20 )
  294. #define CFG_PCMCIA_IO_ADDR (0xEC100000)
  295. #define CFG_PCMCIA_IO_SIZE ( 64 << 20 )
  296. #define PCMCIA_MEM_WIN_NO 5
  297. #define NSCU_OE_INV 1 /* PCMCIA_GCRX_CXOE is inverted */
  298. #endif
  299. /*-----------------------------------------------------------------------
  300. * IDE/ATA stuff (Supports IDE harddisk on PCMCIA Adapter)
  301. *-----------------------------------------------------------------------
  302. */
  303. #define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
  304. #undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
  305. #undef CONFIG_IDE_RESET /* reset for ide not supported */
  306. #ifndef CONFIG_STATUS_LED /* Status and IDE LED's are mutually exclusive */
  307. #define CONFIG_IDE_LED 1 /* LED for ide supported */
  308. #endif
  309. #define CFG_IDE_MAXBUS 1 /* max. 1 IDE bus */
  310. #define CFG_IDE_MAXDEVICE 1 /* max. 1 drive per IDE bus */
  311. #define CFG_ATA_IDE0_OFFSET 0x0000
  312. #define CFG_ATA_BASE_ADDR CFG_PCMCIA_MEM_ADDR
  313. /* Offset for data I/O */
  314. #define CFG_ATA_DATA_OFFSET (CFG_PCMCIA_MEM_SIZE + 0x320)
  315. /* Offset for normal register accesses */
  316. #define CFG_ATA_REG_OFFSET (2 * CFG_PCMCIA_MEM_SIZE + 0x320)
  317. /* Offset for alternate registers */
  318. #define CFG_ATA_ALT_OFFSET 0x0100
  319. /*-----------------------------------------------------------------------
  320. *
  321. *-----------------------------------------------------------------------
  322. *
  323. */
  324. #define CFG_DER 0
  325. /*
  326. * Init Memory Controller:
  327. *
  328. * BR0/1 and OR0/1 (FLASH)
  329. */
  330. #define FLASH_BASE0_PRELIM 0x40000000 /* FLASH bank #0 */
  331. #define FLASH_BASE1_PRELIM 0x60000000 /* FLASH bank #0 */
  332. /* used to re-map FLASH both when starting from SRAM or FLASH:
  333. * restrict access enough to keep SRAM working (if any)
  334. * but not too much to meddle with FLASH accesses
  335. */
  336. #define CFG_REMAP_OR_AM 0x80000000 /* OR addr mask */
  337. #define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
  338. /*
  339. * FLASH timing:
  340. */
  341. #if defined(CONFIG_80MHz)
  342. /* 80 MHz CPU - 40 MHz bus: ACS = 00, TRLX = 0, CSNT = 1, SCY = 3, EHTR = 1 */
  343. #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | 0 | OR_CSNT_SAM | \
  344. OR_SCY_3_CLK | OR_EHTR | OR_BI)
  345. #elif defined(CONFIG_66MHz)
  346. /* 66 MHz CPU - 66 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 3, EHTR = 1 */
  347. #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
  348. OR_SCY_3_CLK | OR_EHTR | OR_BI)
  349. #else /* 50 MHz */
  350. /* 50 MHz CPU - 50 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 2, EHTR = 1 */
  351. #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
  352. OR_SCY_2_CLK | OR_EHTR | OR_BI)
  353. #endif /*CONFIG_??MHz */
  354. #define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH)
  355. #define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
  356. #define CFG_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )
  357. #define CFG_OR1_REMAP CFG_OR0_REMAP
  358. #define CFG_OR1_PRELIM CFG_OR0_PRELIM
  359. #define CFG_BR1_PRELIM ((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_V )
  360. /*
  361. * BR2/3 and OR2/3 (SDRAM)
  362. *
  363. */
  364. #define SDRAM_BASE2_PRELIM 0x00000000 /* SDRAM bank #0 */
  365. #define SDRAM_BASE3_PRELIM 0x20000000 /* SDRAM bank #1 */
  366. #define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
  367. /* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care) */
  368. #define CFG_OR_TIMING_SDRAM 0x00000A00
  369. #define CFG_OR2_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
  370. #define CFG_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
  371. #ifndef CONFIG_CAN_DRIVER
  372. #define CFG_OR3_PRELIM CFG_OR2_PRELIM
  373. #define CFG_BR3_PRELIM ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
  374. #else /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
  375. #define CFG_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
  376. #define CFG_CAN_OR_AM 0xFFFF8000 /* 32 kB address mask */
  377. #define CFG_OR3_CAN (CFG_CAN_OR_AM | OR_G5LA | OR_BI)
  378. #define CFG_BR3_CAN ((CFG_CAN_BASE & BR_BA_MSK) | \
  379. BR_PS_8 | BR_MS_UPMB | BR_V )
  380. #endif /* CONFIG_CAN_DRIVER */
  381. /*
  382. * Memory Periodic Timer Prescaler
  383. *
  384. * The Divider for PTA (refresh timer) configuration is based on an
  385. * example SDRAM configuration (64 MBit, one bank). The adjustment to
  386. * the number of chip selects (NCS) and the actually needed refresh
  387. * rate is done by setting MPTPR.
  388. *
  389. * PTA is calculated from
  390. * PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
  391. *
  392. * gclk CPU clock (not bus clock!)
  393. * Trefresh Refresh cycle * 4 (four word bursts used)
  394. *
  395. * 4096 Rows from SDRAM example configuration
  396. * 1000 factor s -> ms
  397. * 32 PTP (pre-divider from MPTPR) from SDRAM example configuration
  398. * 4 Number of refresh cycles per period
  399. * 64 Refresh cycle in ms per number of rows
  400. * --------------------------------------------
  401. * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
  402. *
  403. * 50 MHz => 50.000.000 / Divider = 98
  404. * 66 Mhz => 66.000.000 / Divider = 129
  405. * 80 Mhz => 80.000.000 / Divider = 156
  406. */
  407. #if defined(CONFIG_80MHz)
  408. #define CFG_MAMR_PTA 156
  409. #elif defined(CONFIG_66MHz)
  410. #define CFG_MAMR_PTA 129
  411. #else /* 50 MHz */
  412. #define CFG_MAMR_PTA 98
  413. #endif /*CONFIG_??MHz */
  414. /*
  415. * For 16 MBit, refresh rates could be 31.3 us
  416. * (= 64 ms / 2K = 125 / quad bursts).
  417. * For a simpler initialization, 15.6 us is used instead.
  418. *
  419. * #define CFG_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks
  420. * #define CFG_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank
  421. */
  422. #define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
  423. #define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
  424. /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
  425. #define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
  426. #define CFG_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
  427. /*
  428. * MAMR settings for SDRAM
  429. */
  430. /* 8 column SDRAM */
  431. #define CFG_MAMR_8COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
  432. MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
  433. MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
  434. /* 9 column SDRAM */
  435. #define CFG_MAMR_9COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
  436. MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
  437. MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
  438. /*
  439. * Internal Definitions
  440. *
  441. * Boot Flags
  442. */
  443. #define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
  444. #define BOOTFLAG_WARM 0x02 /* Software reboot */
  445. #endif /* __CONFIG_H */