rockchip: add support for rk3288
The rk3288 is a 4-core Cortex-A12 SoC and shares a lot of features
with later SoCs.
Working features are general non-secure mode (the gic needs special
love for that), psci-based smp bringing cpu cores online and also
taking them offline again, psci-based suspend (the simpler variant
also included in the linux kernel, deeper suspend following later)
and I was also already able to test HYP-mode and was able to boot
a virtual kernel using kvm.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Change-Id: Ibaaa583b2e78197591a91d254339706fe732476a
diff --git a/plat/rockchip/rk3288/drivers/secure/secure.c b/plat/rockchip/rk3288/drivers/secure/secure.c
new file mode 100644
index 0000000..68994e4
--- /dev/null
+++ b/plat/rockchip/rk3288/drivers/secure/secure.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+
+#include <plat_private.h>
+#include <secure.h>
+#include <soc.h>
+
+static void sgrf_ddr_rgn_global_bypass(uint32_t bypass)
+{
+ if (bypass)
+ /* set bypass (non-secure regions) for whole ddr regions */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(21),
+ SGRF_DDR_RGN_BYPS);
+ else
+ /* cancel bypass for whole ddr regions */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(21),
+ SGRF_DDR_RGN_NO_BYPS);
+}
+
+/**
+ * There are 8 + 1 regions for DDR secure control:
+ * DDR_RGN_0 ~ DDR_RGN_7: Per DDR_RGNs grain size is 1MB
+ * DDR_RGN_X - the memories of exclude DDR_RGN_0 ~ DDR_RGN_7
+ *
+ * SGRF_SOC_CON6 - start address of RGN_0 + control
+ * SGRF_SOC_CON7 - end address of RGN_0
+ * ...
+ * SGRF_SOC_CON20 - start address of the RGN_7 + control
+ * SGRF_SOC_CON21 - end address of the RGN_7 + RGN_X control
+ *
+ * @rgn - the DDR regions 0 ~ 7 which are can be configured.
+ * The @st and @ed indicate the start and end addresses for which to set
+ * the security, and the unit is byte. When the st_mb == 0, ed_mb == 0, the
+ * address range 0x0 ~ 0xfffff is secure.
+ *
+ * For example, if we would like to set the range [0, 32MB) is security via
+ * DDR_RGN0, then rgn == 0, st_mb == 0, ed_mb == 31.
+ */
+static void sgrf_ddr_rgn_config(uint32_t rgn, uintptr_t st, uintptr_t ed)
+{
+ uintptr_t st_mb, ed_mb;
+
+ assert(rgn <= 7);
+ assert(st < ed);
+
+ /* check aligned 1MB */
+ assert(st % SIZE_M(1) == 0);
+ assert(ed % SIZE_M(1) == 0);
+
+ st_mb = st / SIZE_M(1);
+ ed_mb = ed / SIZE_M(1);
+
+ /* set ddr region addr start */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(6 + (rgn * 2)),
+ BITS_WITH_WMASK(st_mb, SGRF_DDR_RGN_ADDR_WMSK, 0));
+
+ /* set ddr region addr end */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(6 + (rgn * 2) + 1),
+ BITS_WITH_WMASK((ed_mb - 1), SGRF_DDR_RGN_ADDR_WMSK, 0));
+
+ /* select region security */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(6 + (rgn * 2)),
+ SGRF_DDR_RGN_SECURE_SEL);
+
+ /* enable region security */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(6 + (rgn * 2)),
+ SGRF_DDR_RGN_SECURE_EN);
+}
+
+void secure_watchdog_gate(void)
+{
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(0), SGRF_PCLK_WDT_GATE);
+}
+
+void secure_watchdog_ungate(void)
+{
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(0), SGRF_PCLK_WDT_UNGATE);
+}
+
+__pmusramfunc void sram_secure_timer_init(void)
+{
+ mmio_write_32(STIMER1_BASE + TIMER_CONTROL_REG, 0);
+
+ mmio_write_32(STIMER1_BASE + TIMER_LOAD_COUNT0, 0xffffffff);
+ mmio_write_32(STIMER1_BASE + TIMER_LOAD_COUNT1, 0xffffffff);
+
+ /* auto reload & enable the timer */
+ mmio_write_32(STIMER1_BASE + TIMER_CONTROL_REG, TIMER_EN);
+}
+
+void secure_gic_init(void)
+{
+ /* (re-)enable non-secure access to the gic*/
+ mmio_write_32(CORE_AXI_BUS_BASE + CORE_AXI_SECURITY0,
+ AXI_SECURITY0_GIC);
+}
+
+void secure_timer_init(void)
+{
+ mmio_write_32(STIMER1_BASE + TIMER_CONTROL_REG, 0);
+
+ mmio_write_32(STIMER1_BASE + TIMER_LOAD_COUNT0, 0xffffffff);
+ mmio_write_32(STIMER1_BASE + TIMER_LOAD_COUNT1, 0xffffffff);
+
+ /* auto reload & enable the timer */
+ mmio_write_32(STIMER1_BASE + TIMER_CONTROL_REG, TIMER_EN);
+}
+
+void secure_sgrf_init(void)
+{
+ /*
+ * We use the first sram part to talk to the bootrom,
+ * so make it secure.
+ */
+ mmio_write_32(TZPC_BASE + TZPC_R0SIZE, TZPC_SRAM_SECURE_4K(1));
+
+ secure_gic_init();
+
+ /* set all master ip to non-secure */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(2), SGRF_SOC_CON2_MST_NS);
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(3), SGRF_SOC_CON3_MST_NS);
+
+ /* setting all configurable ip into non-secure */
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(4),
+ SGRF_SOC_CON4_SECURE_WMSK /*TODO:|SGRF_STIMER_SECURE*/);
+ mmio_write_32(SGRF_BASE + SGRF_SOC_CON(5), SGRF_SOC_CON5_SECURE_WMSK);
+
+ /* secure dma to non-secure */
+ mmio_write_32(TZPC_BASE + TZPC_DECPROT1SET, 0xff);
+ mmio_write_32(TZPC_BASE + TZPC_DECPROT2SET, 0xff);
+ mmio_write_32(SGRF_BASE + SGRF_BUSDMAC_CON(1), 0x3800);
+ dsb();
+
+ /* rst dma1 */
+ mmio_write_32(CRU_BASE + CRU_SOFTRSTS_CON(1),
+ RST_DMA1_MSK | (RST_DMA1_MSK << 16));
+ /* rst dma2 */
+ mmio_write_32(CRU_BASE + CRU_SOFTRSTS_CON(4),
+ RST_DMA2_MSK | (RST_DMA2_MSK << 16));
+
+ dsb();
+
+ /* release dma1 rst*/
+ mmio_write_32(CRU_BASE + CRU_SOFTRSTS_CON(1), (RST_DMA1_MSK << 16));
+ /* release dma2 rst*/
+ mmio_write_32(CRU_BASE + CRU_SOFTRSTS_CON(4), (RST_DMA2_MSK << 16));
+}
+
+void secure_sgrf_ddr_rgn_init(void)
+{
+ sgrf_ddr_rgn_config(0, TZRAM_BASE, TZRAM_SIZE);
+ sgrf_ddr_rgn_global_bypass(0);
+}
diff --git a/plat/rockchip/rk3288/drivers/secure/secure.h b/plat/rockchip/rk3288/drivers/secure/secure.h
new file mode 100644
index 0000000..6c0b2b7
--- /dev/null
+++ b/plat/rockchip/rk3288/drivers/secure/secure.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SECURE_H
+#define SECURE_H
+
+/******************************************************************************
+ * TZPC TrustZone controller
+ ******************************************************************************/
+
+#define TZPC_R0SIZE 0x0
+#define TZPC_SRAM_SECURE_4K(n) ((n) > 0x200 ? 0x200 : (n))
+#define TZPC_DECPROT1STAT 0x80c
+#define TZPC_DECPROT1SET 0x810
+#define TZPC_DECPROT1CLR 0x814
+#define TZPC_DECPROT2STAT 0x818
+#define TZPC_DECPROT2SET 0x818
+#define TZPC_DECPROT2CLR 0x820
+
+/**************************************************
+ * sgrf reg, offset
+ **************************************************/
+/*
+ * soc_con0-5 start at 0x0, soc_con6-... start art 0x50
+ * adjusted for the 5 lower registers
+ */
+#define SGRF_SOC_CON(n) ((((n) < 6) ? 0x0 : 0x38) + (n) * 4)
+#define SGRF_BUSDMAC_CON(n) (0x20 + (n) * 4)
+#define SGRF_CPU_CON(n) (0x40 + (n) * 4)
+#define SGRF_SOC_STATUS(n) (0x100 + (n) * 4)
+#define SGRF_FAST_BOOT_ADDR 0x120
+
+/* SGRF_SOC_CON0 */
+#define SGRF_FAST_BOOT_ENA BIT_WITH_WMSK(8)
+#define SGRF_FAST_BOOT_DIS WMSK_BIT(8)
+#define SGRF_PCLK_WDT_GATE BIT_WITH_WMSK(6)
+#define SGRF_PCLK_WDT_UNGATE WMSK_BIT(6)
+#define SGRF_PCLK_STIMER_GATE BIT_WITH_WMSK(4)
+
+#define SGRF_SOC_CON2_MST_NS 0xffe0ffe0
+#define SGRF_SOC_CON3_MST_NS 0x003f003f
+
+/* SGRF_SOC_CON4 */
+#define SGRF_SOC_CON4_SECURE_WMSK 0xffff0000
+#define SGRF_DDRC1_SECURE BIT_WITH_WMSK(12)
+#define SGRF_DDRC0_SECURE BIT_WITH_WMSK(11)
+#define SGRF_PMUSRAM_SECURE BIT_WITH_WMSK(8)
+#define SGRF_WDT_SECURE BIT_WITH_WMSK(7)
+#define SGRF_STIMER_SECURE BIT_WITH_WMSK(6)
+
+/* SGRF_SOC_CON5 */
+#define SGRF_SLV_SEC_BYPS BIT_WITH_WMSK(15)
+#define SGRF_SLV_SEC_NO_BYPS WMSK_BIT(15)
+#define SGRF_SOC_CON5_SECURE_WMSK 0x00ff0000
+
+/* ddr regions in SGRF_SOC_CON6 and following */
+#define SGRF_DDR_RGN_SECURE_SEL BIT_WITH_WMSK(15)
+#define SGRF_DDR_RGN_SECURE_EN BIT_WITH_WMSK(14)
+#define SGRF_DDR_RGN_ADDR_WMSK 0x0fff
+
+/* SGRF_SOC_CON21 */
+/* All security of the DDR RGNs are bypassed */
+#define SGRF_DDR_RGN_BYPS BIT_WITH_WMSK(15)
+#define SGRF_DDR_RGN_NO_BYPS WMSK_BIT(15)
+
+/* SGRF_CPU_CON0 */
+#define SGRF_DAPDEVICE_ENA BIT_WITH_WMSK(0)
+#define SGRF_DAPDEVICE_MSK WMSK_BIT(0)
+
+/*****************************************************************************
+ * core-axi
+ *****************************************************************************/
+#define CORE_AXI_SECURITY0 0x08
+#define AXI_SECURITY0_GIC BIT(0)
+
+/*****************************************************************************
+ * secure timer
+ *****************************************************************************/
+#define TIMER_LOAD_COUNT0 0x00
+#define TIMER_LOAD_COUNT1 0x04
+#define TIMER_CURRENT_VALUE0 0x08
+#define TIMER_CURRENT_VALUE1 0x0C
+#define TIMER_CONTROL_REG 0x10
+#define TIMER_INTSTATUS 0x18
+
+#define TIMER_EN 0x1
+
+#define STIMER1_BASE (STIME_BASE + 0x20)
+
+/* export secure operating APIs */
+void secure_watchdog_gate(void);
+void secure_watchdog_ungate(void);
+void secure_gic_init(void);
+void secure_timer_init(void);
+void secure_sgrf_init(void);
+void secure_sgrf_ddr_rgn_init(void);
+__pmusramfunc void sram_secure_timer_init(void);
+
+#endif /* SECURE_H */