3 * Common board functions for OMAP3 based boards.
5 * (C) Copyright 2004-2008
6 * Texas Instruments, <www.ti.com>
9 * Sunil Kumar <sunilsaini05@gmail.com>
10 * Shashi Ranjan <shashiranjanmca05@gmail.com>
12 * Derived from Beagle Board and 3430 SDP code by
13 * Richard Woodruff <r-woodruff2@ti.com>
14 * Syed Mohammed Khasim <khasim@ti.com>
17 * See file CREDITS for list of people who contributed to this
20 * This program is free software; you can redistribute it and/or
21 * modify it under the terms of the GNU General Public License as
22 * published by the Free Software Foundation; either version 2 of
23 * the License, or (at your option) any later version.
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
37 #include <asm/arch/sys_proto.h>
38 #include <asm/arch/mem.h>
39 #include <asm/cache.h>
40 #include <asm/armv7.h>
41 #include <asm/arch/gpio.h>
42 #include <asm/omap_common.h>
45 extern omap3_sysinfo sysinfo;
46 static void omap3_setup_aux_cr(void);
47 static void omap3_invalidate_l2_cache_secure(void);
49 static const struct gpio_bank gpio_bank_34xx[6] = {
50 { (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX },
51 { (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX },
52 { (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX },
53 { (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX },
54 { (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX },
55 { (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX },
58 const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
60 #ifdef CONFIG_SPL_BUILD
62 * We use static variables because global data is not ready yet.
63 * Initialized data is available in SPL right from the beginning.
64 * We would not typically need to save these parameters in regular
65 * U-Boot. This is needed only in SPL at the moment.
67 u32 omap3_boot_device = BOOT_DEVICE_NAND;
69 /* auto boot mode detection is not possible for OMAP3 - hard code */
70 u32 omap_boot_mode(void)
72 switch (omap_boot_device()) {
73 case BOOT_DEVICE_MMC2:
74 return MMCSD_MODE_RAW;
75 case BOOT_DEVICE_MMC1:
76 return MMCSD_MODE_FAT;
78 case BOOT_DEVICE_NAND:
79 return NAND_MODE_HW_ECC;
82 puts("spl: ERROR: unknown device - can't select boot mode\n");
87 u32 omap_boot_device(void)
89 return omap3_boot_device;
92 #endif /* CONFIG_SPL_BUILD */
95 /******************************************************************************
96 * Routine: secure_unlock
97 * Description: Setup security registers for access
99 *****************************************************************************/
100 void secure_unlock_mem(void)
102 struct pm *pm_rt_ape_base = (struct pm *)PM_RT_APE_BASE_ADDR_ARM;
103 struct pm *pm_gpmc_base = (struct pm *)PM_GPMC_BASE_ADDR_ARM;
104 struct pm *pm_ocm_ram_base = (struct pm *)PM_OCM_RAM_BASE_ADDR_ARM;
105 struct pm *pm_iva2_base = (struct pm *)PM_IVA2_BASE_ADDR_ARM;
106 struct sms *sms_base = (struct sms *)OMAP34XX_SMS_BASE;
108 /* Protection Module Register Target APE (PM_RT) */
109 writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
110 writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
111 writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
112 writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);
114 writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
115 writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
116 writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);
118 writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
119 writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
120 writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
121 writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);
124 writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
125 writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
126 writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);
128 /* SDRC region 0 public */
129 writel(UNLOCK_1, &sms_base->rg_att0);
132 /******************************************************************************
133 * Routine: secureworld_exit()
134 * Description: If chip is EMU and boot type is external
135 * configure secure registers and exit secure world
137 *****************************************************************************/
138 void secureworld_exit()
142 /* configrue non-secure access control register */
143 __asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
144 /* enabling co-processor CP10 and CP11 accesses in NS world */
145 __asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
147 * allow allocation of locked TLBs and L2 lines in NS world
148 * allow use of PLE registers in NS world also
150 __asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
151 __asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));
153 /* Enable ASA in ACR register */
154 __asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
155 __asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
156 __asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
158 /* Exiting secure world */
159 __asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
160 __asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
161 __asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
164 /******************************************************************************
165 * Routine: try_unlock_sram()
166 * Description: If chip is GP/EMU(special) type, unlock the SRAM for
168 *****************************************************************************/
169 void try_unlock_memory()
172 int in_sdram = is_running_in_sdram();
175 * if GP device unlock device SRAM for general use
176 * secure code breaks for Secure/Emulation device - HS/E/T
178 mode = get_device_type();
179 if (mode == GP_DEVICE)
183 * If device is EMU and boot is XIP external booting
184 * Unlock firewalls and disable L2 and put chip
185 * out of secure world
187 * Assuming memories are unlocked by the demon who put us in SDRAM
189 if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
198 /******************************************************************************
200 * Description: Does early system init of muxing and clocks.
201 * - Called path is with SRAM stack.
202 *****************************************************************************/
205 int in_sdram = is_running_in_sdram();
211 /* Errata workarounds */
212 omap3_setup_aux_cr();
214 #ifndef CONFIG_SYS_L2CACHE_OFF
215 /* Invalidate L2-cache from secure mode */
216 omap3_invalidate_l2_cache_secure();
226 #ifdef CONFIG_SPL_BUILD
227 preloader_console_init();
234 /******************************************************************************
235 * Routine: wait_for_command_complete
236 * Description: Wait for posting to finish on watchdog
237 *****************************************************************************/
238 void wait_for_command_complete(struct watchdog *wd_base)
242 pending = readl(&wd_base->wwps);
246 /******************************************************************************
247 * Routine: watchdog_init
248 * Description: Shut down watch dogs
249 *****************************************************************************/
250 void watchdog_init(void)
252 struct watchdog *wd2_base = (struct watchdog *)WD2_BASE;
253 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
256 * There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
257 * either taken care of by ROM (HS/EMU) or not accessible (GP).
258 * We need to take care of WD2-MPU or take a PRCM reset. WD3
259 * should not be running and does not generate a PRCM reset.
262 sr32(&prcm_base->fclken_wkup, 5, 1, 1);
263 sr32(&prcm_base->iclken_wkup, 5, 1, 1);
264 wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);
266 writel(WD_UNLOCK1, &wd2_base->wspr);
267 wait_for_command_complete(wd2_base);
268 writel(WD_UNLOCK2, &wd2_base->wspr);
271 /******************************************************************************
272 * Dummy function to handle errors for EABI incompatibility
273 *****************************************************************************/
278 #if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
279 /******************************************************************************
280 * OMAP3 specific command to switch between NAND HW and SW ecc
281 *****************************************************************************/
282 static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
286 if (strncmp(argv[1], "hw", 2) == 0)
287 omap_nand_switch_ecc(1);
288 else if (strncmp(argv[1], "sw", 2) == 0)
289 omap_nand_switch_ecc(0);
296 printf ("Usage: nandecc %s\n", cmdtp->usage);
301 nandecc, 2, 1, do_switch_ecc,
302 "switch OMAP3 NAND ECC calculation algorithm",
303 "[hw/sw] - Switch between NAND hardware (hw) or software (sw) ecc algorithm"
306 #endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
308 #ifdef CONFIG_DISPLAY_BOARDINFO
310 * Print board information
312 int checkboard (void)
321 printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
322 sysinfo.nand_string);
326 #endif /* CONFIG_DISPLAY_BOARDINFO */
328 static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
330 u32 i, num_params = *parameters;
331 u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
334 * copy the parameters to an un-cached area to avoid coherency
337 for (i = 0; i < num_params; i++) {
338 __raw_writel(*parameters, sram_scratch_space);
340 sram_scratch_space++;
343 /* Now make the PPA call */
344 do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
347 static void omap3_update_aux_cr_secure(u32 set_bits, u32 clear_bits)
352 asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
356 if (get_device_type() == GP_DEVICE) {
357 omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_WRITE_ACR,
360 struct emu_hal_params emu_romcode_params;
361 emu_romcode_params.num_params = 1;
362 emu_romcode_params.param1 = acr;
363 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
364 (u32 *)&emu_romcode_params);
368 static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
373 asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
377 /* Write ACR - affects non-secure banked bits */
378 asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
381 static void omap3_setup_aux_cr(void)
383 /* Workaround for Cortex-A8 errata: #454179 #430973
385 * Set "Disable Brach Size Mispredicts" bit
386 * Workaround for erratum #621766
388 * ACR |= (IBE | DBSM | L1NEON) => ACR |= 0xE0
390 omap3_update_aux_cr_secure(0xE0, 0);
393 #ifndef CONFIG_SYS_L2CACHE_OFF
394 /* Invalidate the entire L2 cache from secure mode */
395 static void omap3_invalidate_l2_cache_secure(void)
397 if (get_device_type() == GP_DEVICE) {
398 omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_L2_INVAL,
401 struct emu_hal_params emu_romcode_params;
402 emu_romcode_params.num_params = 1;
403 emu_romcode_params.param1 = 0;
404 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
405 (u32 *)&emu_romcode_params);
409 void v7_outer_cache_enable(void)
412 omap3_update_aux_cr_secure(0x2, 0);
415 * On some revisions L2EN bit is banked on some revisions it's not
416 * No harm in setting both banked bits(in fact this is required
419 omap3_update_aux_cr(0x2, 0);
422 void v7_outer_cache_disable(void)
425 omap3_update_aux_cr_secure(0, 0x2);
428 * On some revisions L2EN bit is banked on some revisions it's not
429 * No harm in clearing both banked bits(in fact this is required
432 omap3_update_aux_cr(0, 0x2);
436 #ifndef CONFIG_SYS_DCACHE_OFF
437 void enable_caches(void)
439 /* Enable D-cache. I-cache is already enabled in start.S */