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,
38 #include <asm/arch/sys_proto.h>
39 #include <asm/arch/mem.h>
40 #include <asm/cache.h>
41 #include <asm/armv7.h>
42 #include <asm/arch/gpio.h>
43 #include <asm/omap_common.h>
44 #include <asm/arch/mmc_host_def.h>
46 #include <linux/compiler.h>
48 DECLARE_GLOBAL_DATA_PTR;
51 extern omap3_sysinfo sysinfo;
52 static void omap3_setup_aux_cr(void);
53 static void omap3_invalidate_l2_cache_secure(void);
55 static const struct gpio_bank gpio_bank_34xx[6] = {
56 { (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX },
57 { (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX },
58 { (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX },
59 { (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX },
60 { (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX },
61 { (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX },
64 const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
66 #ifdef CONFIG_SPL_BUILD
68 * We use static variables because global data is not ready yet.
69 * Initialized data is available in SPL right from the beginning.
70 * We would not typically need to save these parameters in regular
71 * U-Boot. This is needed only in SPL at the moment.
73 u32 omap3_boot_device = BOOT_DEVICE_NAND;
75 /* auto boot mode detection is not possible for OMAP3 - hard code */
76 u32 spl_boot_mode(void)
78 switch (spl_boot_device()) {
79 case BOOT_DEVICE_MMC2:
80 return MMCSD_MODE_RAW;
81 case BOOT_DEVICE_MMC1:
82 return MMCSD_MODE_FAT;
85 puts("spl: ERROR: unknown device - can't select boot mode\n");
90 u32 spl_boot_device(void)
92 return omap3_boot_device;
95 int board_mmc_init(bd_t *bis)
97 switch (spl_boot_device()) {
98 case BOOT_DEVICE_MMC1:
99 omap_mmc_init(0, 0, 0);
101 case BOOT_DEVICE_MMC2:
102 case BOOT_DEVICE_MMC2_2:
103 omap_mmc_init(1, 0, 0);
109 void spl_board_init(void)
111 #ifdef CONFIG_SPL_NAND_SUPPORT
114 #ifdef CONFIG_SPL_I2C_SUPPORT
115 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
118 #endif /* CONFIG_SPL_BUILD */
121 /******************************************************************************
122 * Routine: secure_unlock
123 * Description: Setup security registers for access
125 *****************************************************************************/
126 void secure_unlock_mem(void)
128 struct pm *pm_rt_ape_base = (struct pm *)PM_RT_APE_BASE_ADDR_ARM;
129 struct pm *pm_gpmc_base = (struct pm *)PM_GPMC_BASE_ADDR_ARM;
130 struct pm *pm_ocm_ram_base = (struct pm *)PM_OCM_RAM_BASE_ADDR_ARM;
131 struct pm *pm_iva2_base = (struct pm *)PM_IVA2_BASE_ADDR_ARM;
132 struct sms *sms_base = (struct sms *)OMAP34XX_SMS_BASE;
134 /* Protection Module Register Target APE (PM_RT) */
135 writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
136 writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
137 writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
138 writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);
140 writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
141 writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
142 writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);
144 writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
145 writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
146 writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
147 writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);
150 writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
151 writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
152 writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);
154 /* SDRC region 0 public */
155 writel(UNLOCK_1, &sms_base->rg_att0);
158 /******************************************************************************
159 * Routine: secureworld_exit()
160 * Description: If chip is EMU and boot type is external
161 * configure secure registers and exit secure world
163 *****************************************************************************/
164 void secureworld_exit()
168 /* configure non-secure access control register */
169 __asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
170 /* enabling co-processor CP10 and CP11 accesses in NS world */
171 __asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
173 * allow allocation of locked TLBs and L2 lines in NS world
174 * allow use of PLE registers in NS world also
176 __asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
177 __asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));
179 /* Enable ASA in ACR register */
180 __asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
181 __asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
182 __asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
184 /* Exiting secure world */
185 __asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
186 __asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
187 __asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
190 /******************************************************************************
191 * Routine: try_unlock_sram()
192 * Description: If chip is GP/EMU(special) type, unlock the SRAM for
194 *****************************************************************************/
195 void try_unlock_memory()
198 int in_sdram = is_running_in_sdram();
201 * if GP device unlock device SRAM for general use
202 * secure code breaks for Secure/Emulation device - HS/E/T
204 mode = get_device_type();
205 if (mode == GP_DEVICE)
209 * If device is EMU and boot is XIP external booting
210 * Unlock firewalls and disable L2 and put chip
211 * out of secure world
213 * Assuming memories are unlocked by the demon who put us in SDRAM
215 if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
224 /******************************************************************************
226 * Description: Does early system init of muxing and clocks.
227 * - Called path is with SRAM stack.
228 *****************************************************************************/
231 int in_sdram = is_running_in_sdram();
237 /* Errata workarounds */
238 omap3_setup_aux_cr();
240 #ifndef CONFIG_SYS_L2CACHE_OFF
241 /* Invalidate L2-cache from secure mode */
242 omap3_invalidate_l2_cache_secure();
252 #ifdef CONFIG_USB_EHCI_OMAP
253 ehci_clocks_enable();
256 #ifdef CONFIG_SPL_BUILD
259 preloader_console_init();
269 * Routine: misc_init_r
270 * Description: A basic misc_init_r that just displays the die ID
272 int __weak misc_init_r(void)
279 /******************************************************************************
280 * Routine: wait_for_command_complete
281 * Description: Wait for posting to finish on watchdog
282 *****************************************************************************/
283 void wait_for_command_complete(struct watchdog *wd_base)
287 pending = readl(&wd_base->wwps);
291 /******************************************************************************
292 * Routine: watchdog_init
293 * Description: Shut down watch dogs
294 *****************************************************************************/
295 void watchdog_init(void)
297 struct watchdog *wd2_base = (struct watchdog *)WD2_BASE;
298 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
301 * There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
302 * either taken care of by ROM (HS/EMU) or not accessible (GP).
303 * We need to take care of WD2-MPU or take a PRCM reset. WD3
304 * should not be running and does not generate a PRCM reset.
307 sr32(&prcm_base->fclken_wkup, 5, 1, 1);
308 sr32(&prcm_base->iclken_wkup, 5, 1, 1);
309 wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);
311 writel(WD_UNLOCK1, &wd2_base->wspr);
312 wait_for_command_complete(wd2_base);
313 writel(WD_UNLOCK2, &wd2_base->wspr);
316 /******************************************************************************
317 * Dummy function to handle errors for EABI incompatibility
318 *****************************************************************************/
323 #if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
324 /******************************************************************************
325 * OMAP3 specific command to switch between NAND HW and SW ecc
326 *****************************************************************************/
327 static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
331 if (strncmp(argv[1], "hw", 2) == 0)
332 omap_nand_switch_ecc(1);
333 else if (strncmp(argv[1], "sw", 2) == 0)
334 omap_nand_switch_ecc(0);
341 printf ("Usage: nandecc %s\n", cmdtp->usage);
346 nandecc, 2, 1, do_switch_ecc,
347 "switch OMAP3 NAND ECC calculation algorithm",
348 "[hw/sw] - Switch between NAND hardware (hw) or software (sw) ecc algorithm"
351 #endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
353 #ifdef CONFIG_DISPLAY_BOARDINFO
355 * Print board information
357 int checkboard (void)
366 printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
367 sysinfo.nand_string);
371 #endif /* CONFIG_DISPLAY_BOARDINFO */
373 static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
375 u32 i, num_params = *parameters;
376 u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
379 * copy the parameters to an un-cached area to avoid coherency
382 for (i = 0; i < num_params; i++) {
383 __raw_writel(*parameters, sram_scratch_space);
385 sram_scratch_space++;
388 /* Now make the PPA call */
389 do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
392 static void omap3_update_aux_cr_secure(u32 set_bits, u32 clear_bits)
397 asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
401 if (get_device_type() == GP_DEVICE) {
402 omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_WRITE_ACR,
405 struct emu_hal_params emu_romcode_params;
406 emu_romcode_params.num_params = 1;
407 emu_romcode_params.param1 = acr;
408 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
409 (u32 *)&emu_romcode_params);
413 static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
418 asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
422 /* Write ACR - affects non-secure banked bits */
423 asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
426 static void omap3_setup_aux_cr(void)
428 /* Workaround for Cortex-A8 errata: #454179 #430973
430 * Set "Disable Branch Size Mispredicts" bit
431 * Workaround for erratum #621766
433 * ACR |= (IBE | DBSM | L1NEON) => ACR |= 0xE0
435 omap3_update_aux_cr_secure(0xE0, 0);
438 #ifndef CONFIG_SYS_L2CACHE_OFF
439 /* Invalidate the entire L2 cache from secure mode */
440 static void omap3_invalidate_l2_cache_secure(void)
442 if (get_device_type() == GP_DEVICE) {
443 omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_L2_INVAL,
446 struct emu_hal_params emu_romcode_params;
447 emu_romcode_params.num_params = 1;
448 emu_romcode_params.param1 = 0;
449 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
450 (u32 *)&emu_romcode_params);
454 void v7_outer_cache_enable(void)
457 omap3_update_aux_cr_secure(0x2, 0);
460 * On some revisions L2EN bit is banked on some revisions it's not
461 * No harm in setting both banked bits(in fact this is required
464 omap3_update_aux_cr(0x2, 0);
467 void omap3_outer_cache_disable(void)
470 omap3_update_aux_cr_secure(0, 0x2);
473 * On some revisions L2EN bit is banked on some revisions it's not
474 * No harm in clearing both banked bits(in fact this is required
477 omap3_update_aux_cr(0, 0x2);
481 #ifndef CONFIG_SYS_DCACHE_OFF
482 void enable_caches(void)
484 /* Enable D-cache. I-cache is already enabled in start.S */