TQM855M.h 18 KB

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  1. /*
  2. * (C) Copyright 2000-2008
  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_MPC855 1 /* This is a MPC855 CPU */
  33. #define CONFIG_TQM855M 1 /* ...on a TQM8xxM module */
  34. #define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
  35. #undef CONFIG_8xx_CONS_SMC2
  36. #undef CONFIG_8xx_CONS_NONE
  37. #define CONFIG_BAUDRATE 115200 /* console baudrate = 115kbps */
  38. #define CONFIG_BOOTCOUNT_LIMIT
  39. #define CONFIG_BOOTDELAY 5 /* autoboot after 5 seconds */
  40. #define CONFIG_BOARD_TYPES 1 /* support board types */
  41. #define CONFIG_PREBOOT "echo;" \
  42. "echo Type \\\"run flash_nfs\\\" to mount root filesystem over NFS;" \
  43. "echo"
  44. #undef CONFIG_BOOTARGS
  45. #define CONFIG_EXTRA_ENV_SETTINGS \
  46. "netdev=eth0\0" \
  47. "nfsargs=setenv bootargs root=/dev/nfs rw " \
  48. "nfsroot=${serverip}:${rootpath}\0" \
  49. "ramargs=setenv bootargs root=/dev/ram rw\0" \
  50. "addip=setenv bootargs ${bootargs} " \
  51. "ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}" \
  52. ":${hostname}:${netdev}:off panic=1\0" \
  53. "flash_nfs=run nfsargs addip;" \
  54. "bootm ${kernel_addr}\0" \
  55. "flash_self=run ramargs addip;" \
  56. "bootm ${kernel_addr} ${ramdisk_addr}\0" \
  57. "net_nfs=tftp 200000 ${bootfile};run nfsargs addip;bootm\0" \
  58. "rootpath=/opt/eldk/ppc_8xx\0" \
  59. "hostname=TQM855M\0" \
  60. "bootfile=TQM855M/uImage\0" \
  61. "fdt_addr=40080000\0" \
  62. "kernel_addr=400A0000\0" \
  63. "ramdisk_addr=40280000\0" \
  64. "u-boot=TQM855M/u-image.bin\0" \
  65. "load=tftp 200000 ${u-boot}\0" \
  66. "update=prot off 40000000 +${filesize};" \
  67. "era 40000000 +${filesize};" \
  68. "cp.b 200000 40000000 ${filesize};" \
  69. "sete filesize;save\0" \
  70. ""
  71. #define CONFIG_BOOTCOMMAND "run flash_self"
  72. #define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
  73. #undef CONFIG_SYS_LOADS_BAUD_CHANGE /* don't allow baudrate change */
  74. #undef CONFIG_WATCHDOG /* watchdog disabled */
  75. #define CONFIG_STATUS_LED 1 /* Status LED enabled */
  76. #undef CONFIG_CAN_DRIVER /* CAN Driver support disabled */
  77. /* enable I2C and select the hardware/software driver */
  78. #undef CONFIG_HARD_I2C /* I2C with hardware support */
  79. #define CONFIG_SOFT_I2C 1 /* I2C bit-banged */
  80. #define CONFIG_SYS_I2C_SPEED 93000 /* 93 kHz is supposed to work */
  81. #define CONFIG_SYS_I2C_SLAVE 0xFE
  82. #ifdef CONFIG_SOFT_I2C
  83. /*
  84. * Software (bit-bang) I2C driver configuration
  85. */
  86. #define PB_SCL 0x00000020 /* PB 26 */
  87. #define PB_SDA 0x00000010 /* PB 27 */
  88. #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL)
  89. #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA)
  90. #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA)
  91. #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
  92. #define I2C_SDA(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \
  93. else immr->im_cpm.cp_pbdat &= ~PB_SDA
  94. #define I2C_SCL(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \
  95. else immr->im_cpm.cp_pbdat &= ~PB_SCL
  96. #define I2C_DELAY udelay(2) /* 1/4 I2C clock duration */
  97. #endif /* CONFIG_SOFT_I2C */
  98. #define CONFIG_SYS_I2C_EEPROM_ADDR 0x50 /* EEPROM AT24C64 */
  99. #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 2 /* two byte address */
  100. #if 0
  101. #define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 10 /* takes up to 10 msec */
  102. #define CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW 0x01
  103. #define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS 5
  104. #endif
  105. /*
  106. * BOOTP options
  107. */
  108. #define CONFIG_BOOTP_SUBNETMASK
  109. #define CONFIG_BOOTP_GATEWAY
  110. #define CONFIG_BOOTP_HOSTNAME
  111. #define CONFIG_BOOTP_BOOTPATH
  112. #define CONFIG_BOOTP_BOOTFILESIZE
  113. #define CONFIG_MAC_PARTITION
  114. #define CONFIG_DOS_PARTITION
  115. #define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
  116. /*
  117. * Command line configuration.
  118. */
  119. #include <config_cmd_default.h>
  120. #define CONFIG_CMD_ASKENV
  121. #define CONFIG_CMD_DATE
  122. #define CONFIG_CMD_DHCP
  123. #define CONFIG_CMD_ELF
  124. #define CONFIG_CMD_EXT2
  125. #define CONFIG_CMD_EEPROM
  126. #define CONFIG_CMD_IDE
  127. #define CONFIG_CMD_JFFS2
  128. #define CONFIG_CMD_NFS
  129. #define CONFIG_CMD_SNTP
  130. #define CONFIG_NETCONSOLE
  131. /*
  132. * Miscellaneous configurable options
  133. */
  134. #define CONFIG_SYS_LONGHELP /* undef to save memory */
  135. #define CONFIG_SYS_PROMPT "=> " /* Monitor Command Prompt */
  136. #define CONFIG_CMDLINE_EDITING 1 /* add command line history */
  137. #define CONFIG_SYS_HUSH_PARSER 1 /* Use the HUSH parser */
  138. #ifdef CONFIG_SYS_HUSH_PARSER
  139. #define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
  140. #endif
  141. #if defined(CONFIG_CMD_KGDB)
  142. #define CONFIG_SYS_CBSIZE 1024 /* Console I/O Buffer Size */
  143. #else
  144. #define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */
  145. #endif
  146. #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE+sizeof(CONFIG_SYS_PROMPT)+16) /* Print Buffer Size */
  147. #define CONFIG_SYS_MAXARGS 16 /* max number of command args */
  148. #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE /* Boot Argument Buffer Size */
  149. #define CONFIG_SYS_MEMTEST_START 0x0400000 /* memtest works on */
  150. #define CONFIG_SYS_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
  151. #define CONFIG_SYS_LOAD_ADDR 0x100000 /* default load address */
  152. #define CONFIG_SYS_HZ 1000 /* decrementer freq: 1 ms ticks */
  153. #define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
  154. /*
  155. * Low Level Configuration Settings
  156. * (address mappings, register initial values, etc.)
  157. * You should know what you are doing if you make changes here.
  158. */
  159. /*-----------------------------------------------------------------------
  160. * Internal Memory Mapped Register
  161. */
  162. #define CONFIG_SYS_IMMR 0xFFF00000
  163. /*-----------------------------------------------------------------------
  164. * Definitions for initial stack pointer and data area (in DPRAM)
  165. */
  166. #define CONFIG_SYS_INIT_RAM_ADDR CONFIG_SYS_IMMR
  167. #define CONFIG_SYS_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
  168. #define CONFIG_SYS_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
  169. #define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_END - CONFIG_SYS_GBL_DATA_SIZE)
  170. #define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
  171. /*-----------------------------------------------------------------------
  172. * Start addresses for the final memory configuration
  173. * (Set up by the startup code)
  174. * Please note that CONFIG_SYS_SDRAM_BASE _must_ start at 0
  175. */
  176. #define CONFIG_SYS_SDRAM_BASE 0x00000000
  177. #define CONFIG_SYS_FLASH_BASE 0x40000000
  178. #define CONFIG_SYS_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
  179. #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
  180. #define CONFIG_SYS_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
  181. /*
  182. * For booting Linux, the board info and command line data
  183. * have to be in the first 8 MB of memory, since this is
  184. * the maximum mapped by the Linux kernel during initialization.
  185. */
  186. #define CONFIG_SYS_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
  187. /*-----------------------------------------------------------------------
  188. * FLASH organization
  189. */
  190. /* use CFI flash driver */
  191. #define CONFIG_SYS_FLASH_CFI 1 /* Flash is CFI conformant */
  192. #define CONFIG_FLASH_CFI_DRIVER 1 /* Use the common driver */
  193. #define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
  194. #define CONFIG_SYS_FLASH_EMPTY_INFO
  195. #define CONFIG_SYS_FLASH_USE_BUFFER_WRITE 1
  196. #define CONFIG_SYS_MAX_FLASH_BANKS 1 /* max number of memory banks */
  197. #define CONFIG_SYS_MAX_FLASH_SECT 256 /* max number of sectors on one chip */
  198. #define CONFIG_ENV_IS_IN_FLASH 1
  199. #define CONFIG_ENV_OFFSET 0x40000 /* Offset of Environment Sector */
  200. #define CONFIG_ENV_SIZE 0x08000 /* Total Size of Environment */
  201. #define CONFIG_ENV_SECT_SIZE 0x20000 /* Total Size of Environment Sector */
  202. /* Address and size of Redundant Environment Sector */
  203. #define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET+CONFIG_ENV_SECT_SIZE)
  204. #define CONFIG_ENV_SIZE_REDUND (CONFIG_ENV_SIZE)
  205. #define CONFIG_SYS_USE_PPCENV /* Environment embedded in sect .ppcenv */
  206. #define CONFIG_MISC_INIT_R /* Make sure to remap flashes correctly */
  207. /*-----------------------------------------------------------------------
  208. * Dynamic MTD partition support
  209. */
  210. #define CONFIG_CMD_MTDPARTS
  211. #define CONFIG_MTD_DEVICE /* needed for mtdparts commands */
  212. #define CONFIG_FLASH_CFI_MTD
  213. #define MTDIDS_DEFAULT "nor0=TQM8xxM-0"
  214. #define MTDPARTS_DEFAULT "mtdparts=TQM8xxM-0:512k(u-boot)," \
  215. "128k(dtb)," \
  216. "1920k(kernel)," \
  217. "5632(rootfs)," \
  218. "4m(data)"
  219. /*-----------------------------------------------------------------------
  220. * Hardware Information Block
  221. */
  222. #define CONFIG_SYS_HWINFO_OFFSET 0x0003FFC0 /* offset of HW Info block */
  223. #define CONFIG_SYS_HWINFO_SIZE 0x00000040 /* size of HW Info block */
  224. #define CONFIG_SYS_HWINFO_MAGIC 0x54514D38 /* 'TQM8' */
  225. /*-----------------------------------------------------------------------
  226. * Cache Configuration
  227. */
  228. #define CONFIG_SYS_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
  229. #if defined(CONFIG_CMD_KGDB)
  230. #define CONFIG_SYS_CACHELINE_SHIFT 4 /* log base 2 of the above value */
  231. #endif
  232. /*-----------------------------------------------------------------------
  233. * SYPCR - System Protection Control 11-9
  234. * SYPCR can only be written once after reset!
  235. *-----------------------------------------------------------------------
  236. * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
  237. */
  238. #if defined(CONFIG_WATCHDOG)
  239. #define CONFIG_SYS_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
  240. SYPCR_SWE | SYPCR_SWRI| SYPCR_SWP)
  241. #else
  242. #define CONFIG_SYS_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
  243. #endif
  244. /*-----------------------------------------------------------------------
  245. * SIUMCR - SIU Module Configuration 11-6
  246. *-----------------------------------------------------------------------
  247. * PCMCIA config., multi-function pin tri-state
  248. */
  249. #ifndef CONFIG_CAN_DRIVER
  250. #define CONFIG_SYS_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
  251. #else /* we must activate GPL5 in the SIUMCR for CAN */
  252. #define CONFIG_SYS_SIUMCR (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
  253. #endif /* CONFIG_CAN_DRIVER */
  254. /*-----------------------------------------------------------------------
  255. * TBSCR - Time Base Status and Control 11-26
  256. *-----------------------------------------------------------------------
  257. * Clear Reference Interrupt Status, Timebase freezing enabled
  258. */
  259. #define CONFIG_SYS_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
  260. /*-----------------------------------------------------------------------
  261. * RTCSC - Real-Time Clock Status and Control Register 11-27
  262. *-----------------------------------------------------------------------
  263. */
  264. #define CONFIG_SYS_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
  265. /*-----------------------------------------------------------------------
  266. * PISCR - Periodic Interrupt Status and Control 11-31
  267. *-----------------------------------------------------------------------
  268. * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
  269. */
  270. #define CONFIG_SYS_PISCR (PISCR_PS | PISCR_PITF)
  271. /*-----------------------------------------------------------------------
  272. * PLPRCR - PLL, Low-Power, and Reset Control Register 15-30
  273. *-----------------------------------------------------------------------
  274. * Reset PLL lock status sticky bit, timer expired status bit and timer
  275. * interrupt status bit
  276. */
  277. #define CONFIG_SYS_PLPRCR (PLPRCR_SPLSS | PLPRCR_TEXPS | PLPRCR_TMIST)
  278. /*-----------------------------------------------------------------------
  279. * SCCR - System Clock and reset Control Register 15-27
  280. *-----------------------------------------------------------------------
  281. * Set clock output, timebase and RTC source and divider,
  282. * power management and some other internal clocks
  283. */
  284. #define SCCR_MASK SCCR_EBDF11
  285. #define CONFIG_SYS_SCCR (SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
  286. SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
  287. SCCR_DFALCD00)
  288. /*-----------------------------------------------------------------------
  289. * PCMCIA stuff
  290. *-----------------------------------------------------------------------
  291. *
  292. */
  293. #define CONFIG_SYS_PCMCIA_MEM_ADDR (0xE0000000)
  294. #define CONFIG_SYS_PCMCIA_MEM_SIZE ( 64 << 20 )
  295. #define CONFIG_SYS_PCMCIA_DMA_ADDR (0xE4000000)
  296. #define CONFIG_SYS_PCMCIA_DMA_SIZE ( 64 << 20 )
  297. #define CONFIG_SYS_PCMCIA_ATTRB_ADDR (0xE8000000)
  298. #define CONFIG_SYS_PCMCIA_ATTRB_SIZE ( 64 << 20 )
  299. #define CONFIG_SYS_PCMCIA_IO_ADDR (0xEC000000)
  300. #define CONFIG_SYS_PCMCIA_IO_SIZE ( 64 << 20 )
  301. /*-----------------------------------------------------------------------
  302. * IDE/ATA stuff (Supports IDE harddisk on PCMCIA Adapter)
  303. *-----------------------------------------------------------------------
  304. */
  305. #define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
  306. #undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
  307. #undef CONFIG_IDE_LED /* LED for ide not supported */
  308. #undef CONFIG_IDE_RESET /* reset for ide not supported */
  309. #define CONFIG_SYS_IDE_MAXBUS 1 /* max. 1 IDE bus */
  310. #define CONFIG_SYS_IDE_MAXDEVICE 1 /* max. 1 drive per IDE bus */
  311. #define CONFIG_SYS_ATA_IDE0_OFFSET 0x0000
  312. #define CONFIG_SYS_ATA_BASE_ADDR CONFIG_SYS_PCMCIA_MEM_ADDR
  313. /* Offset for data I/O */
  314. #define CONFIG_SYS_ATA_DATA_OFFSET (CONFIG_SYS_PCMCIA_MEM_SIZE + 0x320)
  315. /* Offset for normal register accesses */
  316. #define CONFIG_SYS_ATA_REG_OFFSET (2 * CONFIG_SYS_PCMCIA_MEM_SIZE + 0x320)
  317. /* Offset for alternate registers */
  318. #define CONFIG_SYS_ATA_ALT_OFFSET 0x0100
  319. /*-----------------------------------------------------------------------
  320. *
  321. *-----------------------------------------------------------------------
  322. *
  323. */
  324. #define CONFIG_SYS_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 CONFIG_SYS_REMAP_OR_AM 0x80000000 /* OR addr mask */
  337. #define CONFIG_SYS_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
  338. /*
  339. * FLASH timing:
  340. */
  341. #define CONFIG_SYS_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
  342. OR_SCY_3_CLK | OR_EHTR | OR_BI)
  343. #define CONFIG_SYS_OR0_REMAP (CONFIG_SYS_REMAP_OR_AM | CONFIG_SYS_OR_TIMING_FLASH)
  344. #define CONFIG_SYS_OR0_PRELIM (CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_FLASH)
  345. #define CONFIG_SYS_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )
  346. #define CONFIG_SYS_OR1_REMAP CONFIG_SYS_OR0_REMAP
  347. #define CONFIG_SYS_OR1_PRELIM CONFIG_SYS_OR0_PRELIM
  348. #define CONFIG_SYS_BR1_PRELIM ((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_V )
  349. /*
  350. * BR2/3 and OR2/3 (SDRAM)
  351. *
  352. */
  353. #define SDRAM_BASE2_PRELIM 0x00000000 /* SDRAM bank #0 */
  354. #define SDRAM_BASE3_PRELIM 0x20000000 /* SDRAM bank #1 */
  355. #define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
  356. /* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care) */
  357. #define CONFIG_SYS_OR_TIMING_SDRAM 0x00000A00
  358. #define CONFIG_SYS_OR2_PRELIM (CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_SDRAM )
  359. #define CONFIG_SYS_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
  360. #ifndef CONFIG_CAN_DRIVER
  361. #define CONFIG_SYS_OR3_PRELIM CONFIG_SYS_OR2_PRELIM
  362. #define CONFIG_SYS_BR3_PRELIM ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
  363. #else /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
  364. #define CONFIG_SYS_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
  365. #define CONFIG_SYS_CAN_OR_AM 0xFFFF8000 /* 32 kB address mask */
  366. #define CONFIG_SYS_OR3_CAN (CONFIG_SYS_CAN_OR_AM | OR_G5LA | OR_BI)
  367. #define CONFIG_SYS_BR3_CAN ((CONFIG_SYS_CAN_BASE & BR_BA_MSK) | \
  368. BR_PS_8 | BR_MS_UPMB | BR_V )
  369. #endif /* CONFIG_CAN_DRIVER */
  370. /*
  371. * Memory Periodic Timer Prescaler
  372. *
  373. * The Divider for PTA (refresh timer) configuration is based on an
  374. * example SDRAM configuration (64 MBit, one bank). The adjustment to
  375. * the number of chip selects (NCS) and the actually needed refresh
  376. * rate is done by setting MPTPR.
  377. *
  378. * PTA is calculated from
  379. * PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
  380. *
  381. * gclk CPU clock (not bus clock!)
  382. * Trefresh Refresh cycle * 4 (four word bursts used)
  383. *
  384. * 4096 Rows from SDRAM example configuration
  385. * 1000 factor s -> ms
  386. * 32 PTP (pre-divider from MPTPR) from SDRAM example configuration
  387. * 4 Number of refresh cycles per period
  388. * 64 Refresh cycle in ms per number of rows
  389. * --------------------------------------------
  390. * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
  391. *
  392. * 50 MHz => 50.000.000 / Divider = 98
  393. * 66 Mhz => 66.000.000 / Divider = 129
  394. * 80 Mhz => 80.000.000 / Divider = 156
  395. */
  396. #define CONFIG_SYS_PTA_PER_CLK ((4096 * 32 * 1000) / (4 * 64))
  397. #define CONFIG_SYS_MAMR_PTA 98
  398. /*
  399. * For 16 MBit, refresh rates could be 31.3 us
  400. * (= 64 ms / 2K = 125 / quad bursts).
  401. * For a simpler initialization, 15.6 us is used instead.
  402. *
  403. * #define CONFIG_SYS_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks
  404. * #define CONFIG_SYS_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank
  405. */
  406. #define CONFIG_SYS_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
  407. #define CONFIG_SYS_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
  408. /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
  409. #define CONFIG_SYS_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
  410. #define CONFIG_SYS_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
  411. /*
  412. * MAMR settings for SDRAM
  413. */
  414. /* 8 column SDRAM */
  415. #define CONFIG_SYS_MAMR_8COL ((CONFIG_SYS_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
  416. MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
  417. MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
  418. /* 9 column SDRAM */
  419. #define CONFIG_SYS_MAMR_9COL ((CONFIG_SYS_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
  420. MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
  421. MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
  422. /*
  423. * Internal Definitions
  424. *
  425. * Boot Flags
  426. */
  427. #define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
  428. #define BOOTFLAG_WARM 0x02 /* Software reboot */
  429. #define CONFIG_SCC1_ENET
  430. #define CONFIG_FEC_ENET
  431. #define CONFIG_ETHPRIME "SCC ETHERNET"
  432. #endif /* __CONFIG_H */