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Diffstat (limited to 'plat/sun50iw1p1/mhu.c')
-rw-r--r-- | plat/sun50iw1p1/mhu.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/plat/sun50iw1p1/mhu.c b/plat/sun50iw1p1/mhu.c deleted file mode 100644 index a817b4d..0000000 --- a/plat/sun50iw1p1/mhu.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * Neither the name of ARM nor the names of its contributors may be used - * to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <arch_helpers.h> -#include <bakery_lock.h> -#include <mmio.h> -#include <debug.h> -#include "sunxi_def.h" -#include "mhu.h" -#include "scpi.h" - -#if 1 -void mhu_secure_message_start(void) -{ - -} - -void mhu_secure_message_send(uint32_t command) -{ - switch(command&0xf) - { - case SCPI_CMD_SCP_READY: - NOTICE("send cmd to scp: SCPI_CMD_SCP_READY\n"); - break; - case SCPI_CMD_SET_CSS_POWER_STATE: - NOTICE("send cmd to scp: SCPI_CMD_SET_CSS_POWER_STATE\n"); - break; - case SCPI_CMD_SYS_POWER_STATE: - NOTICE("send cmd to scp: SCPI_CMD_SYS_POWER_STATE\n"); - break; - } -} - -uint32_t mhu_secure_message_wait(void) -{ - /* Wait for response from SCP */ - - return 1; -} - -void mhu_secure_message_end(void) -{ - -} - -void mhu_secure_init(void) -{ - -} -#else -/* SCP MHU secure channel registers */ -#define SCP_INTR_S_STAT 0x200 -#define SCP_INTR_S_SET 0x208 -#define SCP_INTR_S_CLEAR 0x210 - -/* CPU MHU secure channel registers */ -#define CPU_INTR_S_STAT 0x300 -#define CPU_INTR_S_SET 0x308 -#define CPU_INTR_S_CLEAR 0x310 - - -static bakery_lock_t mhu_secure_lock __attribute__ ((section("tzfw_coherent_mem"))); - -void mhu_secure_message_start(void) -{ - bakery_lock_get(&mhu_secure_lock); - - /* Make sure any previous command has finished */ - while (mmio_read_32(MHU_BASE + CPU_INTR_S_STAT) != 0) - ; -} - -void mhu_secure_message_send(uint32_t command) -{ - /* Send command to SCP and wait for it to pick it up */ - mmio_write_32(MHU_BASE + CPU_INTR_S_SET, command); - while (mmio_read_32(MHU_BASE + CPU_INTR_S_STAT) != 0) - ; -} - -uint32_t mhu_secure_message_wait(void) -{ - /* Wait for response from SCP */ - uint32_t response; - while (!(response = mmio_read_32(MHU_BASE + SCP_INTR_S_STAT))) - ; - - return response; -} - -void mhu_secure_message_end(void) -{ - /* Clear any response we got by writing all ones to the CLEAR register */ - mmio_write_32(MHU_BASE + SCP_INTR_S_CLEAR, 0xffffffffu); - - bakery_lock_release(&mhu_secure_lock); -} - -void mhu_secure_init(void) -{ - bakery_lock_init(&mhu_secure_lock); - - /* - * Clear the CPU's INTR register to make sure we don't see a stale - * or garbage value and think it's a message we've already sent. - */ - mmio_write_32(MHU_BASE + CPU_INTR_S_CLEAR, 0xffffffffu); -} -#endif |