diff options
Diffstat (limited to 'plat/rockchip/common/drivers')
| -rw-r--r-- | plat/rockchip/common/drivers/parameter/ddr_parameter.c | 135 | ||||
| -rw-r--r-- | plat/rockchip/common/drivers/parameter/ddr_parameter.h | 44 | ||||
| -rw-r--r-- | plat/rockchip/common/drivers/pmu/pmu_com.h | 122 |
3 files changed, 301 insertions, 0 deletions
diff --git a/plat/rockchip/common/drivers/parameter/ddr_parameter.c b/plat/rockchip/common/drivers/parameter/ddr_parameter.c new file mode 100644 index 0000000..e89fe1e --- /dev/null +++ b/plat/rockchip/common/drivers/parameter/ddr_parameter.c @@ -0,0 +1,135 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <string.h> + +#include <platform_def.h> + +#include <arch_helpers.h> +#include <common/debug.h> +#include <drivers/console.h> +#include <drivers/delay_timer.h> +#include <lib/mmio.h> + +#include <plat_private.h> +#include <soc.h> + +#include "ddr_parameter.h" + +/* + * The miniloader delivers the parameters about ddr usage info from address + * 0x02000000 and the data format is defined as below figure. It tells ATF the + * areas of ddr that are used by platform, we treat them as non-secure regions + * by default. Then we should parse the other part regions and configurate them + * as secure regions to avoid illegal access. + * + * [ddr usage info data format] + * 0x02000000 + * ----------------------------------------------------------------------------- + * | <name> | <size> | <description> | + * ----------------------------------------------------------------------------- + * | count | 4byte | the array numbers of the | + * | | | 'addr_array' and 'size_array' | + * ----------------------------------------------------------------------------- + * | reserved | 4byte | just for 'addr_array' 8byte aligned | + * ----------------------------------------------------------------------------- + * | addr_array[count] | per 8byte | memory region base address | + * ----------------------------------------------------------------------------- + * | size_array[count] | per 8byte | memory region size (byte) | + * ----------------------------------------------------------------------------- + */ + +/* + * function: read parameters info(ns-regions) and try to parse s-regions info + * + * @addr: head address to the ddr usage struct from miniloader + * @max_mb: the max ddr capacity(MB) that the platform support + */ +struct param_ddr_usage ddr_region_usage_parse(uint64_t addr, uint64_t max_mb) +{ + uint64_t base, top; + uint32_t i, addr_offset, size_offset; + struct param_ddr_usage p; + + memset(&p, 0, sizeof(p)); + + /* read how many blocks of ns-regions, read from offset: 0x0 */ + p.ns_nr = mmio_read_32(addr + REGION_NR_OFFSET); + if ((p.ns_nr > DDR_REGION_NR_MAX) || (p.ns_nr == 0)) { + ERROR("over or zero region, nr=%d, max=%d\n", + p.ns_nr, DDR_REGION_NR_MAX); + return p; + } + + /* whole ddr regions boundary, it will be used when parse s-regions */ + p.boundary = max_mb; + + /* calculate ns-region base addr and size offset */ + addr_offset = REGION_ADDR_OFFSET; + size_offset = REGION_ADDR_OFFSET + p.ns_nr * REGION_DATA_PER_BYTES; + + /* read all ns-regions base and top address */ + for (i = 0; i < p.ns_nr; i++) { + base = mmio_read_64(addr + addr_offset); + top = base + mmio_read_64(addr + size_offset); + /* + * translate byte to MB and store info, + * Miniloader will promise every ns-region is MB aligned. + */ + p.ns_base[i] = RG_SIZE_MB(base); + p.ns_top[i] = RG_SIZE_MB(top); + + addr_offset += REGION_DATA_PER_BYTES; + size_offset += REGION_DATA_PER_BYTES; + } + + /* + * a s-region's base starts from previous ns-region's top, and a + * s-region's top ends with next ns-region's base. maybe like this: + * + * case1: ns-regison start from 0MB + * ----------------------------------------------- + * | ns0 | S0 | ns1 | S1 | ns2 | + * 0----------------------------------------------- max_mb + * + * + * case2: ns-regison not start from 0MB + * ----------------------------------------------- + * | S0 | ns0 | ns1 | ns2 | S1 | + * 0----------------------------------------------- max_mb + */ + + /* like above case2 figure, ns-region is not start from 0MB */ + if (p.ns_base[0] != 0) { + p.s_base[p.s_nr] = 0; + p.s_top[p.s_nr] = p.ns_base[0]; + p.s_nr++; + } + + /* + * notice: if ns-regions not start from 0MB, p.s_nr = 1 now, otherwise 0 + */ + for (i = 0; i < p.ns_nr; i++) { + /* + * if current ns-regions top covers boundary, + * that means s-regions are all parsed yet, so finsh. + */ + if (p.ns_top[i] == p.boundary) + goto out; + + /* s-region's base starts from previous ns-region's top */ + p.s_base[p.s_nr] = p.ns_top[i]; + + /* s-region's top ends with next ns-region's base */ + if (i + 1 < p.ns_nr) + p.s_top[p.s_nr] = p.ns_base[i + 1]; + else + p.s_top[p.s_nr] = p.boundary; + p.s_nr++; + } +out: + return p; +} diff --git a/plat/rockchip/common/drivers/parameter/ddr_parameter.h b/plat/rockchip/common/drivers/parameter/ddr_parameter.h new file mode 100644 index 0000000..25c93a1 --- /dev/null +++ b/plat/rockchip/common/drivers/parameter/ddr_parameter.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef DDR_PARAMETER_H +#define DDR_PARAMETER_H + +#include <string.h> + +#include <platform_def.h> + +#include <arch_helpers.h> +#include <common/debug.h> +#include <drivers/console.h> +#include <drivers/delay_timer.h> +#include <lib/mmio.h> + +#include <plat_private.h> +#include <soc.h> + +#define DDR_REGION_NR_MAX 10 +#define REGION_NR_OFFSET 0 +#define REGION_ADDR_OFFSET 8 +#define REGION_DATA_PER_BYTES 8 +#define RG_SIZE_MB(byte) ((byte) >> 20) + +/* unit: MB */ +struct param_ddr_usage { + uint64_t boundary; + + uint32_t ns_nr; + uint64_t ns_base[DDR_REGION_NR_MAX]; + uint64_t ns_top[DDR_REGION_NR_MAX]; + + uint32_t s_nr; + uint64_t s_base[DDR_REGION_NR_MAX + 1]; + uint64_t s_top[DDR_REGION_NR_MAX + 1]; +}; + +struct param_ddr_usage ddr_region_usage_parse(uint64_t addr, uint64_t max_mb); + +#endif /* DDR_PARAMETER_H */ diff --git a/plat/rockchip/common/drivers/pmu/pmu_com.h b/plat/rockchip/common/drivers/pmu/pmu_com.h new file mode 100644 index 0000000..5359f73 --- /dev/null +++ b/plat/rockchip/common/drivers/pmu/pmu_com.h @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef PMU_COM_H +#define PMU_COM_H + +#ifndef CHECK_CPU_WFIE_BASE +#define CHECK_CPU_WFIE_BASE (PMU_BASE + PMU_CORE_PWR_ST) +#endif +/* + * Use this macro to instantiate lock before it is used in below + * rockchip_pd_lock_xxx() macros + */ +DECLARE_BAKERY_LOCK(rockchip_pd_lock); + +/* + * These are wrapper macros to the powe domain Bakery Lock API. + */ +#define rockchip_pd_lock_init() bakery_lock_init(&rockchip_pd_lock) +#define rockchip_pd_lock_get() bakery_lock_get(&rockchip_pd_lock) +#define rockchip_pd_lock_rls() bakery_lock_release(&rockchip_pd_lock) + +/***************************************************************************** + * power domain on or off + *****************************************************************************/ +enum pmu_pd_state { + pmu_pd_on = 0, + pmu_pd_off = 1 +}; + +#pragma weak plat_ic_get_pending_interrupt_id +#pragma weak pmu_power_domain_ctr +#pragma weak check_cpu_wfie + +static inline uint32_t pmu_power_domain_st(uint32_t pd) +{ + uint32_t pwrdn_st = mmio_read_32(PMU_BASE + PMU_PWRDN_ST) & BIT(pd); + + if (pwrdn_st) + return pmu_pd_off; + else + return pmu_pd_on; +} + +static int pmu_power_domain_ctr(uint32_t pd, uint32_t pd_state) +{ + uint32_t val; + uint32_t loop = 0; + int ret = 0; + + rockchip_pd_lock_get(); + + val = mmio_read_32(PMU_BASE + PMU_PWRDN_CON); + if (pd_state == pmu_pd_off) + val |= BIT(pd); + else + val &= ~BIT(pd); + + mmio_write_32(PMU_BASE + PMU_PWRDN_CON, val); + dsb(); + + while ((pmu_power_domain_st(pd) != pd_state) && (loop < PD_CTR_LOOP)) { + udelay(1); + loop++; + } + + if (pmu_power_domain_st(pd) != pd_state) { + WARN("%s: %d, %d, error!\n", __func__, pd, pd_state); + ret = -EINVAL; + } + + rockchip_pd_lock_rls(); + + return ret; +} + +static int check_cpu_wfie(uint32_t cpu_id, uint32_t wfie_msk) +{ + uint32_t cluster_id, loop = 0; + + if (cpu_id >= PLATFORM_CLUSTER0_CORE_COUNT) { + cluster_id = 1; + cpu_id -= PLATFORM_CLUSTER0_CORE_COUNT; + } else { + cluster_id = 0; + } + + /* + * wfe/wfi tracking not possible, hopefully the host + * was sucessful in enabling wfe/wfi. + * We'll give a bit of additional time, like the kernel does. + */ + if ((cluster_id && clstb_cpu_wfe < 0) || + (!cluster_id && clstl_cpu_wfe < 0)) { + mdelay(1); + return 0; + } + + if (cluster_id) + wfie_msk <<= (clstb_cpu_wfe + cpu_id); + else + wfie_msk <<= (clstl_cpu_wfe + cpu_id); + + while (!(mmio_read_32(CHECK_CPU_WFIE_BASE) & wfie_msk) && + (loop < CHK_CPU_LOOP)) { + udelay(1); + loop++; + } + + if ((mmio_read_32(CHECK_CPU_WFIE_BASE) & wfie_msk) == 0) { + WARN("%s: %d, %d, %d, error!\n", __func__, + cluster_id, cpu_id, wfie_msk); + return -EINVAL; + } + + return 0; +} + +#endif /* PMU_COM_H */ |