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 * SPDX-License-Identifier: GPL-2.0+
23 #include <asm/arch/sys_proto.h>
24 #include <asm/arch/mem.h>
25 #include <asm/cache.h>
26 #include <asm/armv7.h>
28 #include <asm/omap_common.h>
29 #include <linux/compiler.h>
32 extern omap3_sysinfo sysinfo;
33 #ifndef CONFIG_SYS_L2CACHE_OFF
34 static void omap3_invalidate_l2_cache_secure(void);
38 static const struct omap_gpio_platdata omap34xx_gpio[] = {
39 { 0, OMAP34XX_GPIO1_BASE },
40 { 1, OMAP34XX_GPIO2_BASE },
41 { 2, OMAP34XX_GPIO3_BASE },
42 { 3, OMAP34XX_GPIO4_BASE },
43 { 4, OMAP34XX_GPIO5_BASE },
44 { 5, OMAP34XX_GPIO6_BASE },
47 U_BOOT_DEVICES(omap34xx_gpios) = {
48 { "gpio_omap", &omap34xx_gpio[0] },
49 { "gpio_omap", &omap34xx_gpio[1] },
50 { "gpio_omap", &omap34xx_gpio[2] },
51 { "gpio_omap", &omap34xx_gpio[3] },
52 { "gpio_omap", &omap34xx_gpio[4] },
53 { "gpio_omap", &omap34xx_gpio[5] },
58 static const struct gpio_bank gpio_bank_34xx[6] = {
59 { (void *)OMAP34XX_GPIO1_BASE },
60 { (void *)OMAP34XX_GPIO2_BASE },
61 { (void *)OMAP34XX_GPIO3_BASE },
62 { (void *)OMAP34XX_GPIO4_BASE },
63 { (void *)OMAP34XX_GPIO5_BASE },
64 { (void *)OMAP34XX_GPIO6_BASE },
67 const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
71 /******************************************************************************
72 * Routine: secure_unlock
73 * Description: Setup security registers for access
75 *****************************************************************************/
76 void secure_unlock_mem(void)
78 struct pm *pm_rt_ape_base = (struct pm *)PM_RT_APE_BASE_ADDR_ARM;
79 struct pm *pm_gpmc_base = (struct pm *)PM_GPMC_BASE_ADDR_ARM;
80 struct pm *pm_ocm_ram_base = (struct pm *)PM_OCM_RAM_BASE_ADDR_ARM;
81 struct pm *pm_iva2_base = (struct pm *)PM_IVA2_BASE_ADDR_ARM;
82 struct sms *sms_base = (struct sms *)OMAP34XX_SMS_BASE;
84 /* Protection Module Register Target APE (PM_RT) */
85 writel(UNLOCK_1, &pm_rt_ape_base->req_info_permission_1);
86 writel(UNLOCK_1, &pm_rt_ape_base->read_permission_0);
87 writel(UNLOCK_1, &pm_rt_ape_base->wirte_permission_0);
88 writel(UNLOCK_2, &pm_rt_ape_base->addr_match_1);
90 writel(UNLOCK_3, &pm_gpmc_base->req_info_permission_0);
91 writel(UNLOCK_3, &pm_gpmc_base->read_permission_0);
92 writel(UNLOCK_3, &pm_gpmc_base->wirte_permission_0);
94 writel(UNLOCK_3, &pm_ocm_ram_base->req_info_permission_0);
95 writel(UNLOCK_3, &pm_ocm_ram_base->read_permission_0);
96 writel(UNLOCK_3, &pm_ocm_ram_base->wirte_permission_0);
97 writel(UNLOCK_2, &pm_ocm_ram_base->addr_match_2);
100 writel(UNLOCK_3, &pm_iva2_base->req_info_permission_0);
101 writel(UNLOCK_3, &pm_iva2_base->read_permission_0);
102 writel(UNLOCK_3, &pm_iva2_base->wirte_permission_0);
104 /* SDRC region 0 public */
105 writel(UNLOCK_1, &sms_base->rg_att0);
108 /******************************************************************************
109 * Routine: secureworld_exit()
110 * Description: If chip is EMU and boot type is external
111 * configure secure registers and exit secure world
113 *****************************************************************************/
114 void secureworld_exit(void)
118 /* configure non-secure access control register */
119 __asm__ __volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i));
120 /* enabling co-processor CP10 and CP11 accesses in NS world */
121 __asm__ __volatile__("orr %0, %0, #0xC00":"=r"(i));
123 * allow allocation of locked TLBs and L2 lines in NS world
124 * allow use of PLE registers in NS world also
126 __asm__ __volatile__("orr %0, %0, #0x70000":"=r"(i));
127 __asm__ __volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i));
129 /* Enable ASA in ACR register */
130 __asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
131 __asm__ __volatile__("orr %0, %0, #0x10":"=r"(i));
132 __asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
134 /* Exiting secure world */
135 __asm__ __volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i));
136 __asm__ __volatile__("orr %0, %0, #0x31":"=r"(i));
137 __asm__ __volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i));
140 /******************************************************************************
141 * Routine: try_unlock_sram()
142 * Description: If chip is GP/EMU(special) type, unlock the SRAM for
144 *****************************************************************************/
145 void try_unlock_memory(void)
148 int in_sdram = is_running_in_sdram();
151 * if GP device unlock device SRAM for general use
152 * secure code breaks for Secure/Emulation device - HS/E/T
154 mode = get_device_type();
155 if (mode == GP_DEVICE)
159 * If device is EMU and boot is XIP external booting
160 * Unlock firewalls and disable L2 and put chip
161 * out of secure world
163 * Assuming memories are unlocked by the demon who put us in SDRAM
165 if ((mode <= EMU_DEVICE) && (get_boot_type() == 0x1F)
174 void early_system_init(void)
179 /******************************************************************************
181 * Description: Does early system init of muxing and clocks.
182 * - Called path is with SRAM stack.
183 *****************************************************************************/
191 #ifndef CONFIG_SYS_L2CACHE_OFF
192 /* Invalidate L2-cache from secure mode */
193 omap3_invalidate_l2_cache_secure();
203 #ifdef CONFIG_USB_EHCI_OMAP
204 ehci_clocks_enable();
208 #ifdef CONFIG_SPL_BUILD
209 void board_init_f(ulong dummy)
214 * Save the boot parameters passed from romcode.
215 * We cannot delay the saving further than this,
216 * to prevent overwrites.
218 save_omap_boot_params();
223 * Routine: misc_init_r
224 * Description: A basic misc_init_r that just displays the die ID
226 int __weak misc_init_r(void)
228 omap_die_id_display();
233 /******************************************************************************
234 * Routine: wait_for_command_complete
235 * Description: Wait for posting to finish on watchdog
236 *****************************************************************************/
237 static void wait_for_command_complete(struct watchdog *wd_base)
241 pending = readl(&wd_base->wwps);
245 /******************************************************************************
246 * Routine: watchdog_init
247 * Description: Shut down watch dogs
248 *****************************************************************************/
249 void watchdog_init(void)
251 struct watchdog *wd2_base = (struct watchdog *)WD2_BASE;
252 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
255 * There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
256 * either taken care of by ROM (HS/EMU) or not accessible (GP).
257 * We need to take care of WD2-MPU or take a PRCM reset. WD3
258 * should not be running and does not generate a PRCM reset.
261 setbits_le32(&prcm_base->fclken_wkup, 0x20);
262 setbits_le32(&prcm_base->iclken_wkup, 0x20);
263 wait_on_value(ST_WDT2, 0x20, &prcm_base->idlest_wkup, 5);
265 writel(WD_UNLOCK1, &wd2_base->wspr);
266 wait_for_command_complete(wd2_base);
267 writel(WD_UNLOCK2, &wd2_base->wspr);
270 /******************************************************************************
271 * Dummy function to handle errors for EABI incompatibility
272 *****************************************************************************/
277 #if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
278 /******************************************************************************
279 * OMAP3 specific command to switch between NAND HW and SW ecc
280 *****************************************************************************/
281 static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
283 int hw, strength = 1;
285 if (argc < 2 || argc > 3)
288 if (strncmp(argv[1], "hw", 2) == 0) {
291 if (strncmp(argv[2], "bch8", 4) == 0)
293 else if (strncmp(argv[2], "bch16", 5) == 0)
295 else if (strncmp(argv[2], "hamming", 7) != 0)
298 } else if (strncmp(argv[1], "sw", 2) == 0) {
301 if (strncmp(argv[2], "bch8", 4) == 0)
303 else if (strncmp(argv[2], "hamming", 7) != 0)
310 return -omap_nand_switch_ecc(hw, strength);
313 printf ("Usage: nandecc %s\n", cmdtp->usage);
318 nandecc, 3, 1, do_switch_ecc,
319 "switch OMAP3 NAND ECC calculation algorithm",
320 "hw [hamming|bch8|bch16] - Switch between NAND hardware 1-bit hamming"
321 " and 8-bit/16-bit BCH\n"
322 " ecc calculation (second parameter may"
324 "nandecc sw - Switch to NAND software ecc algorithm."
327 #endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
329 #ifdef CONFIG_DISPLAY_BOARDINFO
331 * Print board information
333 int checkboard (void)
342 printf("%s + %s/%s\n", sysinfo.board_string, mem_s,
343 sysinfo.nand_string);
347 #endif /* CONFIG_DISPLAY_BOARDINFO */
349 static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
351 u32 i, num_params = *parameters;
352 u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA;
355 * copy the parameters to an un-cached area to avoid coherency
358 for (i = 0; i < num_params; i++) {
359 __raw_writel(*parameters, sram_scratch_space);
361 sram_scratch_space++;
364 /* Now make the PPA call */
365 do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
368 void __weak omap3_set_aux_cr_secure(u32 acr)
370 struct emu_hal_params emu_romcode_params;
372 emu_romcode_params.num_params = 1;
373 emu_romcode_params.param1 = acr;
374 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
375 (u32 *)&emu_romcode_params);
378 void v7_arch_cp15_set_l2aux_ctrl(u32 l2auxctrl, u32 cpu_midr,
379 u32 cpu_rev_comb, u32 cpu_variant,
382 if (get_device_type() == GP_DEVICE)
383 omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_L2ACR, l2auxctrl);
385 /* L2 Cache Auxiliary Control Register is not banked */
388 void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
389 u32 cpu_variant, u32 cpu_rev)
391 /* Write ACR - affects secure banked bits */
392 if (get_device_type() == GP_DEVICE)
393 omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_ACR, acr);
395 omap3_set_aux_cr_secure(acr);
397 /* Write ACR - affects non-secure banked bits - some erratas need it */
398 asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
402 #ifndef CONFIG_SYS_L2CACHE_OFF
403 static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
408 asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
411 v7_arch_cp15_set_acr(acr, 0, 0, 0, 0);
415 /* Invalidate the entire L2 cache from secure mode */
416 static void omap3_invalidate_l2_cache_secure(void)
418 if (get_device_type() == GP_DEVICE) {
419 omap_smc1(OMAP3_GP_ROMCODE_API_L2_INVAL, 0);
421 struct emu_hal_params emu_romcode_params;
422 emu_romcode_params.num_params = 1;
423 emu_romcode_params.param1 = 0;
424 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL,
425 (u32 *)&emu_romcode_params);
429 void v7_outer_cache_enable(void)
434 * On some revisions L2EN bit is banked on some revisions it's not
435 * No harm in setting both banked bits(in fact this is required
438 omap3_update_aux_cr(0x2, 0);
441 void omap3_outer_cache_disable(void)
445 * On some revisions L2EN bit is banked on some revisions it's not
446 * No harm in clearing both banked bits(in fact this is required
449 omap3_update_aux_cr(0, 0x2);
451 #endif /* !CONFIG_SYS_L2CACHE_OFF */