diff options
| -rw-r--r-- | arch/arm/mach-omap2/board-rx51.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap-secure.c | 65 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap-secure.h | 11 |
3 files changed, 88 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c index 773510556..db168c9 100644 --- a/arch/arm/mach-omap2/board-rx51.c +++ b/arch/arm/mach-omap2/board-rx51.c @@ -2,6 +2,8 @@ * Board support file for Nokia N900 (aka RX-51). * * Copyright (C) 2007, 2008 Nokia + * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg> + * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -31,7 +33,9 @@ #include "mux.h" #include "gpmc.h" #include "pm.h" +#include "soc.h" #include "sdram-nokia.h" +#include "omap-secure.h" #define RX51_GPIO_SLEEP_IND 162 @@ -103,6 +107,14 @@ static void __init rx51_init(void) usb_musb_init(&musb_board_data); rx51_peripherals_init(); + if (omap_type() == OMAP2_DEVICE_TYPE_SEC) { +#ifdef CONFIG_ARM_ERRATA_430973 + pr_info("RX-51: Enabling ARM errata 430973 workaround\n"); + /* set IBE to 1 */ + rx51_secure_update_aux_cr(BIT(6), 0); +#endif + } + /* Ensure SDRC pins are mux'd for self-refresh */ omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT); omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT); diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c index b970440..146a7c4 100644 --- a/arch/arm/mach-omap2/omap-secure.c +++ b/arch/arm/mach-omap2/omap-secure.c @@ -3,6 +3,8 @@ * * Copyright (C) 2011 Texas Instruments, Inc. * Santosh Shilimkar <santosh.shilimkar@ti.com> + * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg> + * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com> * * * This program is free software,you can redistribute it and/or modify @@ -70,3 +72,66 @@ phys_addr_t omap_secure_ram_mempool_base(void) { return omap_secure_memblock_base; } + +/** + * rx51_secure_dispatcher: Routine to dispatch secure PPA API calls + * @idx: The PPA API index + * @process: Process ID + * @flag: The flag indicating criticality of operation + * @nargs: Number of valid arguments out of four. + * @arg1, arg2, arg3 args4: Parameters passed to secure API + * + * Return the non-zero error value on failure. + * + * NOTE: rx51_secure_dispatcher differs from omap_secure_dispatcher because + * it calling omap_smc3() instead omap_smc2() and param[0] is nargs+1 + */ +u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs, + u32 arg1, u32 arg2, u32 arg3, u32 arg4) +{ + u32 ret; + u32 param[5]; + + param[0] = nargs+1; /* RX-51 needs number of arguments + 1 */ + param[1] = arg1; + param[2] = arg2; + param[3] = arg3; + param[4] = arg4; + + /* + * Secure API needs physical address + * pointer for the parameters + */ + local_irq_disable(); + local_fiq_disable(); + flush_cache_all(); + outer_clean_range(__pa(param), __pa(param + 5)); + ret = omap_smc3(idx, process, flag, __pa(param)); + flush_cache_all(); + local_fiq_enable(); + local_irq_enable(); + + return ret; +} + +/** + * rx51_secure_update_aux_cr: Routine to modify the contents of Auxiliary Control Register + * @set_bits: bits to set in ACR + * @clr_bits: bits to clear in ACR + * + * Return the non-zero error value on failure. +*/ +u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits) +{ + u32 acr; + + /* Read ACR */ + asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr)); + acr &= ~clear_bits; + acr |= set_bits; + + return rx51_secure_dispatcher(RX51_PPA_WRITE_ACR, + 0, + FLAG_START_CRITICAL, + 1, acr, 0, 0, 0); +} diff --git a/arch/arm/mach-omap2/omap-secure.h b/arch/arm/mach-omap2/omap-secure.h index c4586f4..51b59c6 100644 --- a/arch/arm/mach-omap2/omap-secure.h +++ b/arch/arm/mach-omap2/omap-secure.h @@ -3,6 +3,8 @@ * * Copyright (C) 2011 Texas Instruments, Inc. * Santosh Shilimkar <santosh.shilimkar@ti.com> + * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg> + * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -46,6 +48,11 @@ #define OMAP4_PPA_L2_POR_INDEX 0x23 #define OMAP4_PPA_CPU_ACTRL_SMP_INDEX 0x25 +/* Secure RX-51 PPA (Primary Protected Application) APIs */ +#define RX51_PPA_HWRNG 29 +#define RX51_PPA_L2_INVAL 40 +#define RX51_PPA_WRITE_ACR 42 + #ifndef __ASSEMBLER__ extern u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, @@ -55,6 +62,10 @@ extern u32 omap_smc3(u32 id, u32 process, u32 flag, u32 pargs); extern phys_addr_t omap_secure_ram_mempool_base(void); extern int omap_secure_ram_reserve_memblock(void); +extern u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs, + u32 arg1, u32 arg2, u32 arg3, u32 arg4); +extern u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits); + #ifdef CONFIG_OMAP4_ERRATA_I688 extern int omap_barrier_reserve_memblock(void); #else |
