2 * Copyright (C) 2014 Gateworks Corporation
3 * Author: Tim Harvey <tharvey@gateworks.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/crm_regs.h>
12 #include <asm/arch/iomux.h>
13 #include <asm/arch/mx6-ddr.h>
14 #include <asm/arch/mx6-pins.h>
15 #include <asm/arch/sys_proto.h>
16 #include <asm/imx-common/boot_mode.h>
17 #include <asm/imx-common/iomux-v3.h>
18 #include <asm/imx-common/mxc_i2c.h>
21 #include "ventana_eeprom.h"
23 DECLARE_GLOBAL_DATA_PTR
;
25 #define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
27 #define GSC_EEPROM_ADDR 0x51
28 #define GSC_EEPROM_DDR_SIZE 0x2B /* enum (512,1024,2048) MB */
29 #define GSC_EEPROM_DDR_WIDTH 0x2D /* enum (32,64) bit */
30 #define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
31 PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS | \
32 PAD_CTL_ODE | PAD_CTL_SRE_FAST)
33 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
34 #define CONFIG_SYS_I2C_SPEED 100000
37 static struct i2c_pads_info mx6q_i2c_pad_info0
= {
39 .i2c_mode
= MX6Q_PAD_EIM_D21__I2C1_SCL
| PC
,
40 .gpio_mode
= MX6Q_PAD_EIM_D21__GPIO3_IO21
| PC
,
41 .gp
= IMX_GPIO_NR(3, 21)
44 .i2c_mode
= MX6Q_PAD_EIM_D28__I2C1_SDA
| PC
,
45 .gpio_mode
= MX6Q_PAD_EIM_D28__GPIO3_IO28
| PC
,
46 .gp
= IMX_GPIO_NR(3, 28)
49 static struct i2c_pads_info mx6dl_i2c_pad_info0
= {
51 .i2c_mode
= MX6DL_PAD_EIM_D21__I2C1_SCL
| PC
,
52 .gpio_mode
= MX6DL_PAD_EIM_D21__GPIO3_IO21
| PC
,
53 .gp
= IMX_GPIO_NR(3, 21)
56 .i2c_mode
= MX6DL_PAD_EIM_D28__I2C1_SDA
| PC
,
57 .gpio_mode
= MX6DL_PAD_EIM_D28__GPIO3_IO28
| PC
,
58 .gp
= IMX_GPIO_NR(3, 28)
62 static void i2c_setup_iomux(void)
64 if (is_cpu_type(MXC_CPU_MX6Q
))
65 setup_i2c(0, CONFIG_SYS_I2C_SPEED
, 0x7f, &mx6q_i2c_pad_info0
);
67 setup_i2c(0, CONFIG_SYS_I2C_SPEED
, 0x7f, &mx6dl_i2c_pad_info0
);
70 /* configure MX6Q/DUAL mmdc DDR io registers */
71 struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs
= {
72 /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
73 .dram_sdclk_0
= 0x00020030,
74 .dram_sdclk_1
= 0x00020030,
75 .dram_cas
= 0x00020030,
76 .dram_ras
= 0x00020030,
77 .dram_reset
= 0x00020030,
78 /* SDCKE[0:1]: 100k pull-up */
79 .dram_sdcke0
= 0x00003000,
80 .dram_sdcke1
= 0x00003000,
81 /* SDBA2: pull-up disabled */
82 .dram_sdba2
= 0x00000000,
83 /* SDODT[0:1]: 100k pull-up, 40 ohm */
84 .dram_sdodt0
= 0x00003030,
85 .dram_sdodt1
= 0x00003030,
86 /* SDQS[0:7]: Differential input, 40 ohm */
87 .dram_sdqs0
= 0x00000030,
88 .dram_sdqs1
= 0x00000030,
89 .dram_sdqs2
= 0x00000030,
90 .dram_sdqs3
= 0x00000030,
91 .dram_sdqs4
= 0x00000030,
92 .dram_sdqs5
= 0x00000030,
93 .dram_sdqs6
= 0x00000030,
94 .dram_sdqs7
= 0x00000030,
96 /* DQM[0:7]: Differential input, 40 ohm */
97 .dram_dqm0
= 0x00020030,
98 .dram_dqm1
= 0x00020030,
99 .dram_dqm2
= 0x00020030,
100 .dram_dqm3
= 0x00020030,
101 .dram_dqm4
= 0x00020030,
102 .dram_dqm5
= 0x00020030,
103 .dram_dqm6
= 0x00020030,
104 .dram_dqm7
= 0x00020030,
107 /* configure MX6Q/DUAL mmdc GRP io registers */
108 struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs
= {
110 .grp_ddr_type
= 0x000c0000,
111 .grp_ddrmode_ctl
= 0x00020000,
112 /* disable DDR pullups */
113 .grp_ddrpke
= 0x00000000,
114 /* ADDR[00:16], SDBA[0:1]: 40 ohm */
115 .grp_addds
= 0x00000030,
116 /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
117 .grp_ctlds
= 0x00000030,
118 /* DATA[00:63]: Differential input, 40 ohm */
119 .grp_ddrmode
= 0x00020000,
120 .grp_b0ds
= 0x00000030,
121 .grp_b1ds
= 0x00000030,
122 .grp_b2ds
= 0x00000030,
123 .grp_b3ds
= 0x00000030,
124 .grp_b4ds
= 0x00000030,
125 .grp_b5ds
= 0x00000030,
126 .grp_b6ds
= 0x00000030,
127 .grp_b7ds
= 0x00000030,
130 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
131 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs
= {
132 /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
133 .dram_sdclk_0
= 0x00020030,
134 .dram_sdclk_1
= 0x00020030,
135 .dram_cas
= 0x00020030,
136 .dram_ras
= 0x00020030,
137 .dram_reset
= 0x00020030,
138 /* SDCKE[0:1]: 100k pull-up */
139 .dram_sdcke0
= 0x00003000,
140 .dram_sdcke1
= 0x00003000,
141 /* SDBA2: pull-up disabled */
142 .dram_sdba2
= 0x00000000,
143 /* SDODT[0:1]: 100k pull-up, 40 ohm */
144 .dram_sdodt0
= 0x00003030,
145 .dram_sdodt1
= 0x00003030,
146 /* SDQS[0:7]: Differential input, 40 ohm */
147 .dram_sdqs0
= 0x00000030,
148 .dram_sdqs1
= 0x00000030,
149 .dram_sdqs2
= 0x00000030,
150 .dram_sdqs3
= 0x00000030,
151 .dram_sdqs4
= 0x00000030,
152 .dram_sdqs5
= 0x00000030,
153 .dram_sdqs6
= 0x00000030,
154 .dram_sdqs7
= 0x00000030,
156 /* DQM[0:7]: Differential input, 40 ohm */
157 .dram_dqm0
= 0x00020030,
158 .dram_dqm1
= 0x00020030,
159 .dram_dqm2
= 0x00020030,
160 .dram_dqm3
= 0x00020030,
161 .dram_dqm4
= 0x00020030,
162 .dram_dqm5
= 0x00020030,
163 .dram_dqm6
= 0x00020030,
164 .dram_dqm7
= 0x00020030,
167 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
168 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs
= {
170 .grp_ddr_type
= 0x000c0000,
171 /* SDQS[0:7]: Differential input, 40 ohm */
172 .grp_ddrmode_ctl
= 0x00020000,
173 /* disable DDR pullups */
174 .grp_ddrpke
= 0x00000000,
175 /* ADDR[00:16], SDBA[0:1]: 40 ohm */
176 .grp_addds
= 0x00000030,
177 /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
178 .grp_ctlds
= 0x00000030,
179 /* DATA[00:63]: Differential input, 40 ohm */
180 .grp_ddrmode
= 0x00020000,
181 .grp_b0ds
= 0x00000030,
182 .grp_b1ds
= 0x00000030,
183 .grp_b2ds
= 0x00000030,
184 .grp_b3ds
= 0x00000030,
185 .grp_b4ds
= 0x00000030,
186 .grp_b5ds
= 0x00000030,
187 .grp_b6ds
= 0x00000030,
188 .grp_b7ds
= 0x00000030,
191 /* MT41K64M16JT-125 (1Gb density) */
192 static struct mx6_ddr3_cfg mt41k64m16jt_125
= {
205 /* MT41K128M16JT-125 (2Gb density) */
206 static struct mx6_ddr3_cfg mt41k128m16jt_125
= {
219 /* MT41K256M16HA-125 (4Gb density) */
220 static struct mx6_ddr3_cfg mt41k256m16ha_125
= {
234 * calibration - these are the various CPU/DDR3 combinations we support
236 static struct mx6_mmdc_calibration mx6sdl_64x16_mmdc_calib
= {
237 /* write leveling calibration determine */
238 .p0_mpwldectrl0
= 0x004C004E,
239 .p0_mpwldectrl1
= 0x00440044,
240 /* Read DQS Gating calibration */
241 .p0_mpdgctrl0
= 0x42440247,
242 .p0_mpdgctrl1
= 0x02310232,
243 /* Read Calibration: DQS delay relative to DQ read access */
244 .p0_mprddlctl
= 0x45424746,
245 /* Write Calibration: DQ/DM delay relative to DQS write access */
246 .p0_mpwrdlctl
= 0x33382C31,
249 static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib
= {
250 /* write leveling calibration determine */
251 .p0_mpwldectrl0
= 0x001B0016,
252 .p0_mpwldectrl1
= 0x000C000E,
253 /* Read DQS Gating calibration */
254 .p0_mpdgctrl0
= 0x4324033A,
255 .p0_mpdgctrl1
= 0x00000000,
256 /* Read Calibration: DQS delay relative to DQ read access */
257 .p0_mprddlctl
= 0x40403438,
258 /* Write Calibration: DQ/DM delay relative to DQS write access */
259 .p0_mpwrdlctl
= 0x40403D36,
262 static struct mx6_mmdc_calibration mx6sdl_256x16_mmdc_calib
= {
263 /* write leveling calibration determine */
264 .p0_mpwldectrl0
= 0x00420043,
265 .p0_mpwldectrl1
= 0x0016001A,
266 /* Read DQS Gating calibration */
267 .p0_mpdgctrl0
= 0x4238023B,
268 .p0_mpdgctrl1
= 0x00000000,
269 /* Read Calibration: DQS delay relative to DQ read access */
270 .p0_mprddlctl
= 0x40404849,
271 /* Write Calibration: DQ/DM delay relative to DQS write access */
272 .p0_mpwrdlctl
= 0x40402E2F,
275 static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib
= {
276 /* write leveling calibration determine */
277 .p0_mpwldectrl0
= 0x00190017,
278 .p0_mpwldectrl1
= 0x00140026,
279 /* Read DQS Gating calibration */
280 .p0_mpdgctrl0
= 0x43380347,
281 .p0_mpdgctrl1
= 0x433C034D,
282 /* Read Calibration: DQS delay relative to DQ read access */
283 .p0_mprddlctl
= 0x3C313539,
284 /* Write Calibration: DQ/DM delay relative to DQS write access */
285 .p0_mpwrdlctl
= 0x36393C39,
288 static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib
= {
289 /* write leveling calibration determine */
290 .p0_mpwldectrl0
= 0x003C003C,
291 .p0_mpwldectrl1
= 0x001F002A,
292 /* Read DQS Gating calibration */
293 .p0_mpdgctrl0
= 0x42410244,
294 .p0_mpdgctrl1
= 0x4234023A,
295 /* Read Calibration: DQS delay relative to DQ read access */
296 .p0_mprddlctl
= 0x484A4C4B,
297 /* Write Calibration: DQ/DM delay relative to DQS write access */
298 .p0_mpwrdlctl
= 0x33342B32,
301 static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib
= {
302 /* write leveling calibration determine */
303 .p0_mpwldectrl0
= 0x00190017,
304 .p0_mpwldectrl1
= 0x00140026,
305 .p1_mpwldectrl0
= 0x0021001C,
306 .p1_mpwldectrl1
= 0x0011001D,
307 /* Read DQS Gating calibration */
308 .p0_mpdgctrl0
= 0x43380347,
309 .p0_mpdgctrl1
= 0x433C034D,
310 .p1_mpdgctrl0
= 0x032C0324,
311 .p1_mpdgctrl1
= 0x03310232,
312 /* Read Calibration: DQS delay relative to DQ read access */
313 .p0_mprddlctl
= 0x3C313539,
314 .p1_mprddlctl
= 0x37343141,
315 /* Write Calibration: DQ/DM delay relative to DQS write access */
316 .p0_mpwrdlctl
= 0x36393C39,
317 .p1_mpwrdlctl
= 0x42344438,
320 static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib
= {
321 /* write leveling calibration determine */
322 .p0_mpwldectrl0
= 0x003C003C,
323 .p0_mpwldectrl1
= 0x001F002A,
324 .p1_mpwldectrl0
= 0x00330038,
325 .p1_mpwldectrl1
= 0x0022003F,
326 /* Read DQS Gating calibration */
327 .p0_mpdgctrl0
= 0x42410244,
328 .p0_mpdgctrl1
= 0x4234023A,
329 .p1_mpdgctrl0
= 0x022D022D,
330 .p1_mpdgctrl1
= 0x021C0228,
331 /* Read Calibration: DQS delay relative to DQ read access */
332 .p0_mprddlctl
= 0x484A4C4B,
333 .p1_mprddlctl
= 0x4B4D4E4B,
334 /* Write Calibration: DQ/DM delay relative to DQS write access */
335 .p0_mpwrdlctl
= 0x33342B32,
336 .p1_mpwrdlctl
= 0x3933332B,
339 static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib
= {
340 /* write leveling calibration determine */
341 .p0_mpwldectrl0
= 0x001E001A,
342 .p0_mpwldectrl1
= 0x0026001F,
343 /* Read DQS Gating calibration */
344 .p0_mpdgctrl0
= 0x43370349,
345 .p0_mpdgctrl1
= 0x032D0327,
346 /* Read Calibration: DQS delay relative to DQ read access */
347 .p0_mprddlctl
= 0x3D303639,
348 /* Write Calibration: DQ/DM delay relative to DQS write access */
349 .p0_mpwrdlctl
= 0x32363934,
352 static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib
= {
353 /* write leveling calibration determine */
354 .p0_mpwldectrl0
= 0X00480047,
355 .p0_mpwldectrl1
= 0X003D003F,
356 /* Read DQS Gating calibration */
357 .p0_mpdgctrl0
= 0X423E0241,
358 .p0_mpdgctrl1
= 0X022B022C,
359 /* Read Calibration: DQS delay relative to DQ read access */
360 .p0_mprddlctl
= 0X49454A4A,
361 /* Write Calibration: DQ/DM delay relative to DQS write access */
362 .p0_mpwrdlctl
= 0X2E372C32,
365 static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib
= {
366 /* write leveling calibration determine */
367 .p0_mpwldectrl0
= 0X00220021,
368 .p0_mpwldectrl1
= 0X00200030,
369 .p1_mpwldectrl0
= 0X002D0027,
370 .p1_mpwldectrl1
= 0X00150026,
371 /* Read DQS Gating calibration */
372 .p0_mpdgctrl0
= 0x43330342,
373 .p0_mpdgctrl1
= 0x0339034A,
374 .p1_mpdgctrl0
= 0x032F0325,
375 .p1_mpdgctrl1
= 0x032F022E,
376 /* Read Calibration: DQS delay relative to DQ read access */
377 .p0_mprddlctl
= 0X3A2E3437,
378 .p1_mprddlctl
= 0X35312F3F,
379 /* Write Calibration: DQ/DM delay relative to DQS write access */
380 .p0_mpwrdlctl
= 0X33363B37,
381 .p1_mpwrdlctl
= 0X40304239,
384 static void spl_dram_init(int width
, int size_mb
, int board_model
)
386 struct mx6_ddr3_cfg
*mem
= NULL
;
387 struct mx6_mmdc_calibration
*calib
= NULL
;
388 struct mx6_ddr_sysinfo sysinfo
= {
389 /* width of data bus:0=16,1=32,2=64 */
391 /* config for full 4GB range so that get_mem_size() works */
392 .cs_density
= 32, /* 32Gb per CS */
393 /* single chip select */
396 .rtt_wr
= 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
397 #ifdef RTT_NOM_120OHM
398 .rtt_nom
= 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
400 .rtt_nom
= 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
402 .walat
= 1, /* Write additional latency */
403 .ralat
= 5, /* Read additional latency */
404 .mif3_mode
= 3, /* Command prediction working mode */
405 .bi_on
= 1, /* Bank interleaving enabled */
406 .sde_to_rst
= 0x10, /* 14 cycles, 200us (JEDEC default) */
407 .rst_to_cke
= 0x23, /* 33 cycles, 500us (JEDEC default) */
408 .pd_fast_exit
= 1, /* enable precharge power-down fast exit */
412 * MMDC Calibration requires the following data:
413 * mx6_mmdc_calibration - board-specific calibration (routing delays)
414 * these calibration values depend on board routing, SoC, and DDR
415 * mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
416 * mx6_ddr_cfg - chip specific timing/layout details
418 if (width
== 16 && size_mb
== 128) {
419 mem
= &mt41k64m16jt_125
;
420 if (is_cpu_type(MXC_CPU_MX6Q
))
423 calib
= &mx6sdl_64x16_mmdc_calib
;
424 debug("1gB density\n");
425 } else if (width
== 16 && size_mb
== 256) {
426 /* 1x 2Gb density chip - same calib as 2x 2Gb */
427 mem
= &mt41k128m16jt_125
;
428 if (is_cpu_type(MXC_CPU_MX6Q
))
429 calib
= &mx6dq_128x32_mmdc_calib
;
431 calib
= &mx6sdl_128x32_mmdc_calib
;
432 debug("2gB density\n");
433 } else if (width
== 16 && size_mb
== 512) {
434 mem
= &mt41k256m16ha_125
;
435 if (is_cpu_type(MXC_CPU_MX6Q
))
436 calib
= &mx6dq_256x16_mmdc_calib
;
438 calib
= &mx6sdl_256x16_mmdc_calib
;
439 debug("4gB density\n");
440 } else if (width
== 32 && size_mb
== 256) {
441 /* Same calib as width==16, size==128 */
442 mem
= &mt41k64m16jt_125
;
443 if (is_cpu_type(MXC_CPU_MX6Q
))
446 calib
= &mx6sdl_64x16_mmdc_calib
;
447 debug("1gB density\n");
448 } else if (width
== 32 && size_mb
== 512) {
449 mem
= &mt41k128m16jt_125
;
450 if (is_cpu_type(MXC_CPU_MX6Q
))
451 calib
= &mx6dq_128x32_mmdc_calib
;
453 calib
= &mx6sdl_128x32_mmdc_calib
;
454 debug("2gB density\n");
455 } else if (width
== 32 && size_mb
== 1024) {
456 mem
= &mt41k256m16ha_125
;
457 if (is_cpu_type(MXC_CPU_MX6Q
))
458 calib
= &mx6dq_256x32_mmdc_calib
;
460 calib
= &mx6sdl_256x32_mmdc_calib
;
461 debug("4gB density\n");
462 } else if (width
== 64 && size_mb
== 512) {
463 mem
= &mt41k64m16jt_125
;
464 debug("1gB density\n");
465 } else if (width
== 64 && size_mb
== 1024) {
466 mem
= &mt41k128m16jt_125
;
467 if (is_cpu_type(MXC_CPU_MX6Q
))
468 calib
= &mx6dq_128x64_mmdc_calib
;
470 calib
= &mx6sdl_128x64_mmdc_calib
;
471 debug("2gB density\n");
472 } else if (width
== 64 && size_mb
== 2048) {
473 mem
= &mt41k256m16ha_125
;
474 if (is_cpu_type(MXC_CPU_MX6Q
))
475 calib
= &mx6dq_256x64_mmdc_calib
;
476 debug("4gB density\n");
479 if (!(mem
&& calib
)) {
480 puts("Error: Invalid Calibration/Board Configuration\n");
481 printf("MEM : %s\n", mem
? "OKAY" : "NULL");
482 printf("CALIB : %s\n", calib
? "OKAY" : "NULL");
483 printf("CPUTYPE: %s\n",
484 is_cpu_type(MXC_CPU_MX6Q
) ? "IMX6Q" : "IMX6DL");
485 printf("SIZE_MB: %d\n", size_mb
);
486 printf("WIDTH : %d\n", width
);
490 if (is_cpu_type(MXC_CPU_MX6Q
))
491 mx6dq_dram_iocfg(width
, &mx6dq_ddr_ioregs
,
494 mx6sdl_dram_iocfg(width
, &mx6sdl_ddr_ioregs
,
496 mx6_dram_cfg(&sysinfo
, calib
, mem
);
499 static void ccgr_init(void)
501 struct mxc_ccm_reg
*ccm
= (struct mxc_ccm_reg
*)CCM_BASE_ADDR
;
503 writel(0x00C03F3F, &ccm
->CCGR0
);
504 writel(0x0030FC03, &ccm
->CCGR1
);
505 writel(0x0FFFC000, &ccm
->CCGR2
);
506 writel(0x3FF00000, &ccm
->CCGR3
);
507 writel(0xFFFFF300, &ccm
->CCGR4
); /* enable NAND/GPMI/BCH clks */
508 writel(0x0F0000C3, &ccm
->CCGR5
);
509 writel(0x000003FF, &ccm
->CCGR6
);
512 static void gpr_init(void)
514 struct iomuxc
*iomux
= (struct iomuxc
*)IOMUXC_BASE_ADDR
;
516 /* enable AXI cache for VDOA/VPU/IPU */
517 writel(0xF00000CF, &iomux
->gpr
[4]);
518 /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
519 writel(0x007F007F, &iomux
->gpr
[6]);
520 writel(0x007F007F, &iomux
->gpr
[7]);
524 * called from C runtime startup code (arch/arm/lib/crt0.S:_main)
525 * - we have a stack and a place to store GD, both in SRAM
526 * - no variable global data is available
528 void board_init_f(ulong dummy
)
530 struct ventana_board_info ventana_info
;
533 /* setup AIPS and disable watchdog */
539 /* iomux and setup of i2c */
540 board_early_init_f();
546 /* UART clocks enabled and gd valid - init serial console */
547 preloader_console_init();
549 /* read/validate EEPROM info to determine board model and SDRAM cfg */
550 board_model
= read_eeprom(I2C_GSC
, &ventana_info
);
552 /* provide some some default: 32bit 128MB */
553 if (GW_UNKNOWN
== board_model
) {
554 ventana_info
.sdram_width
= 2;
555 ventana_info
.sdram_size
= 3;
558 /* configure MMDC for SDRAM width/size and per-model calibration */
559 spl_dram_init(8 << ventana_info
.sdram_width
,
560 16 << ventana_info
.sdram_size
,
564 memset(__bss_start
, 0, __bss_end
- __bss_start
);
566 /* load/boot image from boot device */
567 board_init_r(NULL
, 0);
570 void reset_cpu(ulong addr
)