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>
31 DECLARE_GLOBAL_DATA_PTR
;
34 extern omap3_sysinfo sysinfo
;
35 #ifndef CONFIG_SYS_L2CACHE_OFF
36 static void omap3_invalidate_l2_cache_secure(void);
40 static const struct omap_gpio_platdata omap34xx_gpio
[] = {
41 { 0, OMAP34XX_GPIO1_BASE
},
42 { 1, OMAP34XX_GPIO2_BASE
},
43 { 2, OMAP34XX_GPIO3_BASE
},
44 { 3, OMAP34XX_GPIO4_BASE
},
45 { 4, OMAP34XX_GPIO5_BASE
},
46 { 5, OMAP34XX_GPIO6_BASE
},
49 U_BOOT_DEVICES(am33xx_gpios
) = {
50 { "gpio_omap", &omap34xx_gpio
[0] },
51 { "gpio_omap", &omap34xx_gpio
[1] },
52 { "gpio_omap", &omap34xx_gpio
[2] },
53 { "gpio_omap", &omap34xx_gpio
[3] },
54 { "gpio_omap", &omap34xx_gpio
[4] },
55 { "gpio_omap", &omap34xx_gpio
[5] },
60 static const struct gpio_bank gpio_bank_34xx
[6] = {
61 { (void *)OMAP34XX_GPIO1_BASE
},
62 { (void *)OMAP34XX_GPIO2_BASE
},
63 { (void *)OMAP34XX_GPIO3_BASE
},
64 { (void *)OMAP34XX_GPIO4_BASE
},
65 { (void *)OMAP34XX_GPIO5_BASE
},
66 { (void *)OMAP34XX_GPIO6_BASE
},
69 const struct gpio_bank
*const omap_gpio_bank
= gpio_bank_34xx
;
73 /******************************************************************************
74 * Routine: secure_unlock
75 * Description: Setup security registers for access
77 *****************************************************************************/
78 void secure_unlock_mem(void)
80 struct pm
*pm_rt_ape_base
= (struct pm
*)PM_RT_APE_BASE_ADDR_ARM
;
81 struct pm
*pm_gpmc_base
= (struct pm
*)PM_GPMC_BASE_ADDR_ARM
;
82 struct pm
*pm_ocm_ram_base
= (struct pm
*)PM_OCM_RAM_BASE_ADDR_ARM
;
83 struct pm
*pm_iva2_base
= (struct pm
*)PM_IVA2_BASE_ADDR_ARM
;
84 struct sms
*sms_base
= (struct sms
*)OMAP34XX_SMS_BASE
;
86 /* Protection Module Register Target APE (PM_RT) */
87 writel(UNLOCK_1
, &pm_rt_ape_base
->req_info_permission_1
);
88 writel(UNLOCK_1
, &pm_rt_ape_base
->read_permission_0
);
89 writel(UNLOCK_1
, &pm_rt_ape_base
->wirte_permission_0
);
90 writel(UNLOCK_2
, &pm_rt_ape_base
->addr_match_1
);
92 writel(UNLOCK_3
, &pm_gpmc_base
->req_info_permission_0
);
93 writel(UNLOCK_3
, &pm_gpmc_base
->read_permission_0
);
94 writel(UNLOCK_3
, &pm_gpmc_base
->wirte_permission_0
);
96 writel(UNLOCK_3
, &pm_ocm_ram_base
->req_info_permission_0
);
97 writel(UNLOCK_3
, &pm_ocm_ram_base
->read_permission_0
);
98 writel(UNLOCK_3
, &pm_ocm_ram_base
->wirte_permission_0
);
99 writel(UNLOCK_2
, &pm_ocm_ram_base
->addr_match_2
);
102 writel(UNLOCK_3
, &pm_iva2_base
->req_info_permission_0
);
103 writel(UNLOCK_3
, &pm_iva2_base
->read_permission_0
);
104 writel(UNLOCK_3
, &pm_iva2_base
->wirte_permission_0
);
106 /* SDRC region 0 public */
107 writel(UNLOCK_1
, &sms_base
->rg_att0
);
110 /******************************************************************************
111 * Routine: secureworld_exit()
112 * Description: If chip is EMU and boot type is external
113 * configure secure registers and exit secure world
115 *****************************************************************************/
116 void secureworld_exit(void)
120 /* configure non-secure access control register */
121 __asm__
__volatile__("mrc p15, 0, %0, c1, c1, 2":"=r"(i
));
122 /* enabling co-processor CP10 and CP11 accesses in NS world */
123 __asm__
__volatile__("orr %0, %0, #0xC00":"=r"(i
));
125 * allow allocation of locked TLBs and L2 lines in NS world
126 * allow use of PLE registers in NS world also
128 __asm__
__volatile__("orr %0, %0, #0x70000":"=r"(i
));
129 __asm__
__volatile__("mcr p15, 0, %0, c1, c1, 2":"=r"(i
));
131 /* Enable ASA in ACR register */
132 __asm__
__volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i
));
133 __asm__
__volatile__("orr %0, %0, #0x10":"=r"(i
));
134 __asm__
__volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i
));
136 /* Exiting secure world */
137 __asm__
__volatile__("mrc p15, 0, %0, c1, c1, 0":"=r"(i
));
138 __asm__
__volatile__("orr %0, %0, #0x31":"=r"(i
));
139 __asm__
__volatile__("mcr p15, 0, %0, c1, c1, 0":"=r"(i
));
142 /******************************************************************************
143 * Routine: try_unlock_sram()
144 * Description: If chip is GP/EMU(special) type, unlock the SRAM for
146 *****************************************************************************/
147 void try_unlock_memory(void)
150 int in_sdram
= is_running_in_sdram();
153 * if GP device unlock device SRAM for general use
154 * secure code breaks for Secure/Emulation device - HS/E/T
156 mode
= get_device_type();
157 if (mode
== GP_DEVICE
)
161 * If device is EMU and boot is XIP external booting
162 * Unlock firewalls and disable L2 and put chip
163 * out of secure world
165 * Assuming memories are unlocked by the demon who put us in SDRAM
167 if ((mode
<= EMU_DEVICE
) && (get_boot_type() == 0x1F)
176 /******************************************************************************
178 * Description: Does early system init of muxing and clocks.
179 * - Called path is with SRAM stack.
180 *****************************************************************************/
187 #ifndef CONFIG_SYS_L2CACHE_OFF
188 /* Invalidate L2-cache from secure mode */
189 omap3_invalidate_l2_cache_secure();
199 #ifdef CONFIG_USB_EHCI_OMAP
200 ehci_clocks_enable();
204 #ifdef CONFIG_SPL_BUILD
205 void board_init_f(ulong dummy
)
212 * Routine: misc_init_r
213 * Description: A basic misc_init_r that just displays the die ID
215 int __weak
misc_init_r(void)
217 omap_die_id_display();
222 /******************************************************************************
223 * Routine: wait_for_command_complete
224 * Description: Wait for posting to finish on watchdog
225 *****************************************************************************/
226 static void wait_for_command_complete(struct watchdog
*wd_base
)
230 pending
= readl(&wd_base
->wwps
);
234 /******************************************************************************
235 * Routine: watchdog_init
236 * Description: Shut down watch dogs
237 *****************************************************************************/
238 void watchdog_init(void)
240 struct watchdog
*wd2_base
= (struct watchdog
*)WD2_BASE
;
241 struct prcm
*prcm_base
= (struct prcm
*)PRCM_BASE
;
244 * There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is
245 * either taken care of by ROM (HS/EMU) or not accessible (GP).
246 * We need to take care of WD2-MPU or take a PRCM reset. WD3
247 * should not be running and does not generate a PRCM reset.
250 setbits_le32(&prcm_base
->fclken_wkup
, 0x20);
251 setbits_le32(&prcm_base
->iclken_wkup
, 0x20);
252 wait_on_value(ST_WDT2
, 0x20, &prcm_base
->idlest_wkup
, 5);
254 writel(WD_UNLOCK1
, &wd2_base
->wspr
);
255 wait_for_command_complete(wd2_base
);
256 writel(WD_UNLOCK2
, &wd2_base
->wspr
);
259 /******************************************************************************
260 * Dummy function to handle errors for EABI incompatibility
261 *****************************************************************************/
266 #if defined(CONFIG_NAND_OMAP_GPMC) & !defined(CONFIG_SPL_BUILD)
267 /******************************************************************************
268 * OMAP3 specific command to switch between NAND HW and SW ecc
269 *****************************************************************************/
270 static int do_switch_ecc(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
272 if (argc
< 2 || argc
> 3)
275 if (strncmp(argv
[1], "hw", 2) == 0) {
277 omap_nand_switch_ecc(1, 1);
279 if (strncmp(argv
[2], "hamming", 7) == 0)
280 omap_nand_switch_ecc(1, 1);
281 else if (strncmp(argv
[2], "bch8", 4) == 0)
282 omap_nand_switch_ecc(1, 8);
283 else if (strncmp(argv
[2], "bch16", 5) == 0)
284 omap_nand_switch_ecc(1, 16);
288 } else if (strncmp(argv
[1], "sw", 2) == 0) {
290 omap_nand_switch_ecc(0, 1);
292 if (strncmp(argv
[2], "hamming", 7) == 0)
293 omap_nand_switch_ecc(0, 1);
294 else if (strncmp(argv
[2], "bch8", 4) == 0)
295 omap_nand_switch_ecc(0, 8);
306 printf ("Usage: nandecc %s\n", cmdtp
->usage
);
311 nandecc
, 3, 1, do_switch_ecc
,
312 "switch OMAP3 NAND ECC calculation algorithm",
313 "hw [hamming|bch8|bch16] - Switch between NAND hardware 1-bit hamming"
314 " and 8-bit/16-bit BCH\n"
315 " ecc calculation (second parameter may"
317 "nandecc sw - Switch to NAND software ecc algorithm."
320 #endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */
322 #ifdef CONFIG_DISPLAY_BOARDINFO
324 * Print board information
326 int checkboard (void)
335 printf("%s + %s/%s\n", sysinfo
.board_string
, mem_s
,
336 sysinfo
.nand_string
);
340 #endif /* CONFIG_DISPLAY_BOARDINFO */
342 static void omap3_emu_romcode_call(u32 service_id
, u32
*parameters
)
344 u32 i
, num_params
= *parameters
;
345 u32
*sram_scratch_space
= (u32
*)OMAP3_PUBLIC_SRAM_SCRATCH_AREA
;
348 * copy the parameters to an un-cached area to avoid coherency
351 for (i
= 0; i
< num_params
; i
++) {
352 __raw_writel(*parameters
, sram_scratch_space
);
354 sram_scratch_space
++;
357 /* Now make the PPA call */
358 do_omap3_emu_romcode_call(service_id
, OMAP3_PUBLIC_SRAM_SCRATCH_AREA
);
361 void __weak
omap3_set_aux_cr_secure(u32 acr
)
363 struct emu_hal_params emu_romcode_params
;
365 emu_romcode_params
.num_params
= 1;
366 emu_romcode_params
.param1
= acr
;
367 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR
,
368 (u32
*)&emu_romcode_params
);
371 void v7_arch_cp15_set_acr(u32 acr
, u32 cpu_midr
, u32 cpu_rev_comb
,
372 u32 cpu_variant
, u32 cpu_rev
)
374 /* Write ACR - affects secure banked bits */
375 if (get_device_type() == GP_DEVICE
)
376 omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_ACR
, acr
);
378 omap3_set_aux_cr_secure(acr
);
380 /* Write ACR - affects non-secure banked bits - some erratas need it */
381 asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr
));
385 #ifndef CONFIG_SYS_L2CACHE_OFF
386 static void omap3_update_aux_cr(u32 set_bits
, u32 clear_bits
)
391 asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr
));
394 v7_arch_cp15_set_acr(acr
, 0, 0, 0, 0);
398 /* Invalidate the entire L2 cache from secure mode */
399 static void omap3_invalidate_l2_cache_secure(void)
401 if (get_device_type() == GP_DEVICE
) {
402 omap_smc1(OMAP3_GP_ROMCODE_API_L2_INVAL
, 0);
404 struct emu_hal_params emu_romcode_params
;
405 emu_romcode_params
.num_params
= 1;
406 emu_romcode_params
.param1
= 0;
407 omap3_emu_romcode_call(OMAP3_EMU_HAL_API_L2_INVAL
,
408 (u32
*)&emu_romcode_params
);
412 void v7_outer_cache_enable(void)
417 * On some revisions L2EN bit is banked on some revisions it's not
418 * No harm in setting both banked bits(in fact this is required
421 omap3_update_aux_cr(0x2, 0);
424 void omap3_outer_cache_disable(void)
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);
434 #endif /* !CONFIG_SYS_L2CACHE_OFF */