* Clean up mach-bcm config and build targets
* Clean up bcm281xx/21664 SMC code * Clean up bcm281xx/21664 L2C code -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJTf0TFAAoJEOfTILNwq7R4nvIQAI8T/EVvRaGQYgkgyer8rnCq cfurHHrn51uEFUS+kER522wYmGgqK7+B00h6u5QohcLelb7f2CdC2MQarmSA8G1G M5zl5EpmkBBoEpq+co2IGMtdpDk3vQqZbh1yBIb3DsJAQZzsMDUyS/L4vQ/LSCQN VLDLptro5kJmsgMdZ37XhkcLUXYhWPTXEggSHBvVDWk9hjc0h+75ZSwkCegUdA4X JhmojUyb3qyh/Gq+9vRvdakkwlbQQv/duvkzwEDgpFXns7gt7jz/DSuKhH2HymPc N/F3l/mEwVt1k3Ve0ij7tjejXsm/to2goD2YJEkxjdO8QeK808WcHMXQRJL5xNPc 803LI/LtpL9gw0MinLQX7w7WoFbQXI9dUofCzu16va42k0uNmF/OFcTo6Y0R4Fla qhvZDQksHjO0c64P87ly2ypRNhjqkSzrnA+umjJ5UAItSG3AwJYYK8/uuaKJbugp r5QnjRcSJI+k+iA03I9lZCrETS1hUFlMpzlv8ZjoMpRhJ9H4Y7S/xWqtQMJyE9bi ABjJj2Q3Y67NAmKJYYXcCZUNwMuiwitMVo+wamsDbIWEFVk1NTsZBqWRvGkD1Ev4 STKz9UohrlFisODUsBhSt0VgX9D9BMihn5DwsN8Eh0OHbWbPrzWitcO26YBfsEue CH591KjF5+fiPYHMme9j =QVlm -----END PGP SIGNATURE----- Merge tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm into next/cleanup * Clean up mach-bcm config and build targets * Clean up bcm281xx/21664 SMC code * Clean up bcm281xx/21664 L2C code * tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm: ARM: bcm: rename "kona.h" and "kona.c" ARM: bcm: rewrite commentary for bcm_kona_do_smc() ARM: bcm: use inline assembly for "smc" request ARM: bcm: tidy up a few includes ARM: bcm: config option for l2 cache support ARM: bcm: don't special-case CPU 0 in bcm_kona_smc() ARM: bcm: have bcm_kona_smc() return request result ARM: bcm: clean up SMC code ARM: bcm: err, don't BUG() on SMC init failures ARM: bcm: use memory accessors for ioremapped area ARM: bcm: clean up config and build targets Signed-off-by: Arnd Bergmann <arnd@arndb.de> Conflicts: arch/arm/mach-bcm/Kconfig
This commit is contained in:
Arnd Bergmann
commit
c40f01287b
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@ -10,21 +10,51 @@ if ARCH_BCM
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menu "Broadcom SoC Selection"
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config ARCH_BCM_MOBILE
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bool "Broadcom Mobile SoC" if ARCH_MULTI_V7
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bool "Broadcom Mobile SoC Support" if ARCH_MULTI_V7
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select ARCH_REQUIRE_GPIOLIB
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select ARM_ERRATA_754322
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select ARM_ERRATA_764369 if SMP
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select ARM_GIC
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select GPIO_BCM_KONA
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select TICK_ONESHOT
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select CACHE_L2X0
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select HAVE_ARM_ARCH_TIMER
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select PINCTRL
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help
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This enables support for systems based on Broadcom mobile SoCs.
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It currently supports the 'BCM281XX' family, which includes
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BCM11130, BCM11140, BCM11351, BCM28145 and
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BCM28155 variants.
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if ARCH_BCM_MOBILE
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menu "Broadcom Mobile SoC Selection"
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config ARCH_BCM_281XX
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bool "Broadcom BCM281XX SoC family"
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default y
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help
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Enable support for the the BCM281XX family, which includes
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BCM11130, BCM11140, BCM11351, BCM28145 and BCM28155
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variants.
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config ARCH_BCM_21664
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bool "Broadcom BCM21664 SoC family"
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default y
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help
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Enable support for the the BCM21664 family, which includes
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BCM21663 and BCM21664 variants.
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config ARCH_BCM_MOBILE_L2_CACHE
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bool "Broadcom mobile SoC level 2 cache support"
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depends on (ARCH_BCM_281XX || ARCH_BCM_21664)
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default y
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select CACHE_L2X0
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select ARCH_BCM_MOBILE_SMC
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config ARCH_BCM_MOBILE_SMC
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bool
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depends on ARCH_BCM_281XX || ARCH_BCM_21664
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endmenu
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endif
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config ARCH_BCM2835
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bool "Broadcom BCM2835 family" if ARCH_MULTI_V6
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@ -10,10 +10,23 @@
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# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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obj-$(CONFIG_ARCH_BCM_MOBILE) := board_bcm281xx.o board_bcm21664.o \
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bcm_kona_smc.o bcm_kona_smc_asm.o kona.o
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# BCM281XX
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obj-$(CONFIG_ARCH_BCM_281XX) += board_bcm281xx.o
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# BCM21664
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obj-$(CONFIG_ARCH_BCM_21664) += board_bcm21664.o
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# BCM281XX and BCM21664 L2 cache control
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obj-$(CONFIG_ARCH_BCM_MOBILE_L2_CACHE) += kona_l2_cache.o
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# Support for secure monitor traps
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obj-$(CONFIG_ARCH_BCM_MOBILE_SMC) += bcm_kona_smc.o
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ifeq ($(call as-instr,.arch_extension sec,as_has_sec),as_has_sec)
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CFLAGS_bcm_kona_smc.o += -Wa,-march=armv7-a+sec -DREQUIRES_SEC
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endif
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# BCM2835
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obj-$(CONFIG_ARCH_BCM2835) += board_bcm2835.o
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plus_sec := $(call as-instr,.arch_extension sec,+sec)
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AFLAGS_bcm_kona_smc_asm.o :=-Wa,-march=armv7-a$(plus_sec)
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# BCM5301X
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obj-$(CONFIG_ARCH_BCM_5301X) += bcm_5301x.o
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@ -21,11 +21,8 @@
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#include "bcm_kona_smc.h"
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struct secure_bridge_data {
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void __iomem *bounce; /* virtual address */
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u32 __iomem buffer_addr; /* physical address */
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int initialized;
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} bridge_data;
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static u32 bcm_smc_buffer_phys; /* physical address */
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static void __iomem *bcm_smc_buffer; /* virtual address */
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struct bcm_kona_smc_data {
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unsigned service_id;
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@ -33,6 +30,7 @@ struct bcm_kona_smc_data {
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unsigned arg1;
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unsigned arg2;
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unsigned arg3;
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unsigned result;
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};
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static const struct of_device_id bcm_kona_smc_ids[] __initconst = {
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@ -41,59 +39,125 @@ static const struct of_device_id bcm_kona_smc_ids[] __initconst = {
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{},
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};
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/* Map in the bounce area */
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/* Map in the args buffer area */
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int __init bcm_kona_smc_init(void)
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{
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struct device_node *node;
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const __be32 *prop_val;
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u64 prop_size = 0;
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unsigned long buffer_size;
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u32 buffer_phys;
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/* Read buffer addr and size from the device tree node */
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node = of_find_matching_node(NULL, bcm_kona_smc_ids);
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if (!node)
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return -ENODEV;
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/* Don't care about size or flags of the DT node */
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bridge_data.buffer_addr =
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be32_to_cpu(*of_get_address(node, 0, NULL, NULL));
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BUG_ON(!bridge_data.buffer_addr);
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prop_val = of_get_address(node, 0, &prop_size, NULL);
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if (!prop_val)
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return -EINVAL;
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bridge_data.bounce = of_iomap(node, 0);
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BUG_ON(!bridge_data.bounce);
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/* We assume space for four 32-bit arguments */
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if (prop_size < 4 * sizeof(u32) || prop_size > (u64)ULONG_MAX)
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return -EINVAL;
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buffer_size = (unsigned long)prop_size;
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bridge_data.initialized = 1;
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buffer_phys = be32_to_cpup(prop_val);
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if (!buffer_phys)
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return -EINVAL;
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bcm_smc_buffer = ioremap(buffer_phys, buffer_size);
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if (!bcm_smc_buffer)
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return -ENOMEM;
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bcm_smc_buffer_phys = buffer_phys;
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pr_info("Kona Secure API initialized\n");
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return 0;
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}
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/*
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* int bcm_kona_do_smc(u32 service_id, u32 buffer_addr)
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*
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* Only core 0 can run the secure monitor code. If an "smc" request
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* is initiated on a different core it must be redirected to core 0
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* for execution. We rely on the caller to handle this.
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*
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* Each "smc" request supplies a service id and the address of a
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* buffer containing parameters related to the service to be
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* performed. A flags value defines the behavior of the level 2
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* cache and interrupt handling while the secure monitor executes.
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*
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* Parameters to the "smc" request are passed in r4-r6 as follows:
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* r4 service id
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* r5 flags (SEC_ROM_*)
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* r6 physical address of buffer with other parameters
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*
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* Execution of an "smc" request produces two distinct results.
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*
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* First, the secure monitor call itself (regardless of the specific
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* service request) can succeed, or can produce an error. When an
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* "smc" request completes this value is found in r12; it should
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* always be SEC_EXIT_NORMAL.
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*
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* In addition, the particular service performed produces a result.
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* The values that should be expected depend on the service. We
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* therefore return this value to the caller, so it can handle the
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* request result appropriately. This result value is found in r0
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* when the "smc" request completes.
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*/
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static int bcm_kona_do_smc(u32 service_id, u32 buffer_phys)
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{
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register u32 ip asm("ip"); /* Also called r12 */
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register u32 r0 asm("r0");
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register u32 r4 asm("r4");
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register u32 r5 asm("r5");
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register u32 r6 asm("r6");
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r4 = service_id;
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r5 = 0x3; /* Keep IRQ and FIQ off in SM */
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r6 = buffer_phys;
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asm volatile (
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/* Make sure we got the registers we want */
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__asmeq("%0", "ip")
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__asmeq("%1", "r0")
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__asmeq("%2", "r4")
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__asmeq("%3", "r5")
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__asmeq("%4", "r6")
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#ifdef REQUIRES_SEC
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".arch_extension sec\n"
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#endif
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" smc #0\n"
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: "=r" (ip), "=r" (r0)
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: "r" (r4), "r" (r5), "r" (r6)
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: "r1", "r2", "r3", "r7", "lr");
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BUG_ON(ip != SEC_EXIT_NORMAL);
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return r0;
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}
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/* __bcm_kona_smc() should only run on CPU 0, with pre-emption disabled */
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static void __bcm_kona_smc(void *info)
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{
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struct bcm_kona_smc_data *data = info;
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u32 *args = bridge_data.bounce;
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int rc = 0;
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u32 *args = bcm_smc_buffer;
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/* Must run on CPU 0 */
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BUG_ON(smp_processor_id() != 0);
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BUG_ON(!args);
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/* Check map in the bounce area */
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BUG_ON(!bridge_data.initialized);
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/* Copy one 32 bit word into the bounce area */
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args[0] = data->arg0;
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args[1] = data->arg1;
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args[2] = data->arg2;
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args[3] = data->arg3;
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/* Copy the four 32 bit argument values into the bounce area */
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writel_relaxed(data->arg0, args++);
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writel_relaxed(data->arg1, args++);
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writel_relaxed(data->arg2, args++);
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writel(data->arg3, args);
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/* Flush caches for input data passed to Secure Monitor */
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if (data->service_id != SSAPI_BRCM_START_VC_CORE)
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flush_cache_all();
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flush_cache_all();
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/* Trap into Secure Monitor */
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rc = bcm_kona_smc_asm(data->service_id, bridge_data.buffer_addr);
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if (rc != SEC_ROM_RET_OK)
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pr_err("Secure Monitor call failed (0x%x)!\n", rc);
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/* Trap into Secure Monitor and record the request result */
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data->result = bcm_kona_do_smc(data->service_id, bcm_smc_buffer_phys);
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}
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unsigned bcm_kona_smc(unsigned service_id, unsigned arg0, unsigned arg1,
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|
|
@ -106,17 +170,13 @@ unsigned bcm_kona_smc(unsigned service_id, unsigned arg0, unsigned arg1,
|
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data.arg1 = arg1;
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data.arg2 = arg2;
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data.arg3 = arg3;
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data.result = 0;
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|
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/*
|
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* Due to a limitation of the secure monitor, we must use the SMP
|
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* infrastructure to forward all secure monitor calls to Core 0.
|
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*/
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if (get_cpu() != 0)
|
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smp_call_function_single(0, __bcm_kona_smc, (void *)&data, 1);
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else
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__bcm_kona_smc(&data);
|
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smp_call_function_single(0, __bcm_kona_smc, &data, 1);
|
||||
|
||||
put_cpu();
|
||||
|
||||
return 0;
|
||||
return data.result;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,55 +15,12 @@
|
|||
#define BCM_KONA_SMC_H
|
||||
|
||||
#include <linux/types.h>
|
||||
#define FLAGS (SEC_ROM_ICACHE_ENABLE_MASK | SEC_ROM_DCACHE_ENABLE_MASK | \
|
||||
SEC_ROM_IRQ_ENABLE_MASK | SEC_ROM_FIQ_ENABLE_MASK)
|
||||
|
||||
/*!
|
||||
* Definitions for IRQ & FIQ Mask for ARM
|
||||
*/
|
||||
|
||||
#define FIQ_IRQ_MASK 0xC0
|
||||
#define FIQ_MASK 0x40
|
||||
#define IRQ_MASK 0x80
|
||||
|
||||
/*!
|
||||
* Secure Mode FLAGs
|
||||
*/
|
||||
|
||||
/* When set, enables ICache within the secure mode */
|
||||
#define SEC_ROM_ICACHE_ENABLE_MASK 0x00000001
|
||||
|
||||
/* When set, enables DCache within the secure mode */
|
||||
#define SEC_ROM_DCACHE_ENABLE_MASK 0x00000002
|
||||
|
||||
/* When set, enables IRQ within the secure mode */
|
||||
#define SEC_ROM_IRQ_ENABLE_MASK 0x00000004
|
||||
|
||||
/* When set, enables FIQ within the secure mode */
|
||||
#define SEC_ROM_FIQ_ENABLE_MASK 0x00000008
|
||||
|
||||
/* When set, enables Unified L2 cache within the secure mode */
|
||||
#define SEC_ROM_UL2_CACHE_ENABLE_MASK 0x00000010
|
||||
|
||||
/* Broadcom Secure Service API Service IDs */
|
||||
#define SSAPI_DORMANT_ENTRY_SERV 0x01000000
|
||||
#define SSAPI_PUBLIC_OTP_SERV 0x01000001
|
||||
#define SSAPI_ENABLE_L2_CACHE 0x01000002
|
||||
#define SSAPI_DISABLE_L2_CACHE 0x01000003
|
||||
#define SSAPI_WRITE_SCU_STATUS 0x01000004
|
||||
#define SSAPI_WRITE_PWR_GATE 0x01000005
|
||||
|
||||
/* Broadcom Secure Service API Return Codes */
|
||||
/* Broadcom Secure Service API service IDs, return codes, and exit codes */
|
||||
#define SSAPI_ENABLE_L2_CACHE 0x01000002
|
||||
#define SEC_ROM_RET_OK 0x00000001
|
||||
#define SEC_ROM_RET_FAIL 0x00000009
|
||||
|
||||
#define SSAPI_RET_FROM_INT_SERV 0x4
|
||||
#define SEC_EXIT_NORMAL 0x1
|
||||
|
||||
#define SSAPI_ROW_AES 0x0E000006
|
||||
#define SSAPI_BRCM_START_VC_CORE 0x0E000008
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
extern int __init bcm_kona_smc_init(void);
|
||||
|
||||
extern unsigned bcm_kona_smc(unsigned service_id,
|
||||
|
|
@ -72,9 +29,4 @@ extern unsigned bcm_kona_smc(unsigned service_id,
|
|||
unsigned arg2,
|
||||
unsigned arg3);
|
||||
|
||||
extern int bcm_kona_smc_asm(u32 service_id,
|
||||
u32 buffer_addr);
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#endif /* BCM_KONA_SMC_H */
|
||||
|
|
|
|||
|
|
@ -1,41 +0,0 @@
|
|||
/*
|
||||
* Copyright (C) 2013 Broadcom Corporation
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation version 2.
|
||||
*
|
||||
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||||
* kind, whether express or implied; without even the implied warranty
|
||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/linkage.h>
|
||||
#include "bcm_kona_smc.h"
|
||||
|
||||
/*
|
||||
* int bcm_kona_smc_asm(u32 service_id, u32 buffer_addr)
|
||||
*/
|
||||
|
||||
ENTRY(bcm_kona_smc_asm)
|
||||
stmfd sp!, {r4-r12, lr}
|
||||
mov r4, r0 @ service_id
|
||||
mov r5, #3 @ Keep IRQ and FIQ off in SM
|
||||
/*
|
||||
* Since interrupts are disabled in the open mode, we must keep
|
||||
* interrupts disabled in secure mode by setting R5=0x3. If interrupts
|
||||
* are enabled in open mode, we can set R5=0x0 to allow interrupts in
|
||||
* secure mode. If we did this, the secure monitor would return back
|
||||
* control to the open mode to handle the interrupt prior to completing
|
||||
* the secure service. If this happened, R12 would not be
|
||||
* SEC_EXIT_NORMAL and we would need to call SMC again after resetting
|
||||
* R5 (it gets clobbered by the secure monitor) and setting R4 to
|
||||
* SSAPI_RET_FROM_INT_SERV to indicate that we want the secure monitor
|
||||
* to finish up the previous uncompleted secure service.
|
||||
*/
|
||||
mov r6, r1 @ buffer_addr
|
||||
smc #0
|
||||
/* Check r12 for SEC_EXIT_NORMAL here if interrupts are enabled */
|
||||
ldmfd sp!, {r4-r12, pc}
|
||||
ENDPROC(bcm_kona_smc_asm)
|
||||
|
|
@ -11,14 +11,13 @@
|
|||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/clocksource.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/io.h>
|
||||
|
||||
#include <asm/mach/arch.h>
|
||||
|
||||
#include "bcm_kona_smc.h"
|
||||
#include "kona.h"
|
||||
#include "kona_l2_cache.h"
|
||||
|
||||
#define RSTMGR_DT_STRING "brcm,bcm21664-resetmgr"
|
||||
|
||||
|
|
|
|||
|
|
@ -17,7 +17,7 @@
|
|||
|
||||
#include <asm/mach/arch.h>
|
||||
|
||||
#include "kona.h"
|
||||
#include "kona_l2_cache.h"
|
||||
|
||||
#define SECWDOG_OFFSET 0x00000000
|
||||
#define SECWDOG_RESERVED_MASK 0xe2000000
|
||||
|
|
|
|||
|
|
@ -11,19 +11,18 @@
|
|||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/of_platform.h>
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/printk.h>
|
||||
#include <asm/hardware/cache-l2x0.h>
|
||||
|
||||
#include "bcm_kona_smc.h"
|
||||
#include "kona.h"
|
||||
|
||||
void __init kona_l2_cache_init(void)
|
||||
{
|
||||
unsigned int result;
|
||||
int ret;
|
||||
|
||||
if (!IS_ENABLED(CONFIG_CACHE_L2X0))
|
||||
return;
|
||||
|
||||
ret = bcm_kona_smc_init();
|
||||
if (ret) {
|
||||
pr_info("Secure API not available (%d). Skipping L2 init.\n",
|
||||
|
|
@ -31,7 +30,12 @@ void __init kona_l2_cache_init(void)
|
|||
return;
|
||||
}
|
||||
|
||||
bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
|
||||
result = bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
|
||||
if (result != SEC_ROM_RET_OK) {
|
||||
pr_err("Secure Monitor call failed (%u)! Skipping L2 init.\n",
|
||||
result);
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* The aux_val and aux_mask have no effect since L2 cache is already
|
||||
|
|
@ -11,4 +11,8 @@
|
|||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
void __init kona_l2_cache_init(void);
|
||||
#ifdef CONFIG_ARCH_BCM_MOBILE_L2_CACHE
|
||||
void kona_l2_cache_init(void);
|
||||
#else
|
||||
#define kona_l2_cache_init() ((void)0)
|
||||
#endif
|
||||
Loading…
Reference in New Issue