99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
/*
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* Copyright 2023 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/devicetree.h>
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#include <soc.h>
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#define FLEXRAM_DT_NODE DT_INST(0, nxp_flexram)
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#define IOMUXC_GPR_DT_NODE DT_NODELABEL(iomuxcgpr)
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#if defined(CONFIG_MEMC_NXP_FLEXRAM_MAGIC_ADDR_API) || \
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defined(CONFIG_MEMC_NXP_FLEXRAM_ERROR_INTERRUPT)
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#define FLEXRAM_INTERRUPTS_USED
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#endif
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#if DT_PROP_HAS_IDX(FLEXRAM_DT_NODE, flexram_bank_spec, 0)
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#define FLEXRAM_RUNTIME_BANKS_USED 1
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#endif
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#ifdef FLEXRAM_INTERRUPTS_USED
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enum memc_flexram_interrupt_cause {
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#ifdef CONFIG_MEMC_NXP_FLEXRAM_ERROR_INTERRUPT
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flexram_ocram_access_error,
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flexram_itcm_access_error,
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flexram_dtcm_access_error,
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#endif
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#ifdef CONFIG_MEMC_NXP_FLEXRAM_MAGIC_ADDR_API
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flexram_ocram_magic_addr,
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flexram_itcm_magic_addr,
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flexram_dtcm_magic_addr,
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#endif /* CONFIG_MEMC_NXP_FLEXRAM_MAGIC_ADDR_API */
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};
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typedef void (*flexram_callback_t)(enum memc_flexram_interrupt_cause, void *user_data);
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void memc_flexram_register_callback(flexram_callback_t callback, void *user_data);
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#endif /* FLEXRAM_INTERRUPTS_USED */
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#ifdef FLEXRAM_RUNTIME_BANKS_USED
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/*
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* call from platform_init to set up flexram if using runtime map
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* must be inlined because cannot use stack
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*/
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#define GPR17_REG_FILL(node_id, prop, idx) + (DT_PROP_BY_IDX(node_id, prop, idx) << (2*idx))
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static inline void memc_flexram_dt_partition(void)
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{
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/* iomuxc_gpr must be const (in ROM region) because used in reconfiguring ram */
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static IOMUXC_GPR_Type *const iomuxc_gpr =
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(IOMUXC_GPR_Type *) DT_REG_ADDR(IOMUXC_GPR_DT_NODE);
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/* do not create stack variables or use any data from ram in this function */
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iomuxc_gpr->GPR17 = DT_FOREACH_PROP_ELEM_SEP(FLEXRAM_DT_NODE,
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flexram_bank_spec, GPR17_REG_FILL, (+));
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iomuxc_gpr->GPR16 |= IOMUXC_GPR_GPR16_FLEXRAM_BANK_CFG_SEL_MASK;
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}
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#endif /* FLEXRAM_RUNTIME_BANKS_USED */
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#ifdef CONFIG_MEMC_NXP_FLEXRAM_MAGIC_ADDR_API
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/** @brief Sets magic address for OCRAM
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*
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* Magic address allows core interrupt from FlexRAM when address
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* is accessed.
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*
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* @param ocram_addr: An address in OCRAM to set magic function on.
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* @retval 0 on success
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* @retval -EINVAL if ocram_addr is not in OCRAM
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* @retval -ENODEV if there is no OCRAM allocation in flexram
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*/
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int memc_flexram_set_ocram_magic_addr(uint32_t ocram_addr);
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/** @brief Sets magic address for ITCM
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*
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* Magic address allows core interrupt from FlexRAM when address
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* is accessed.
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*
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* @param itcm_addr: An address in ITCM to set magic function on.
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* @retval 0 on success
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* @retval -EINVAL if itcm_addr is not in ITCM
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* @retval -ENODEV if there is no ITCM allocation in flexram
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*/
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int memc_flexram_set_itcm_magic_addr(uint32_t itcm_addr);
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/** @brief Sets magic address for DTCM
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*
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* Magic address allows core interrupt from FlexRAM when address
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* is accessed.
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*
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* @param dtcm_addr: An address in DTCM to set magic function on.
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* @retval 0 on success
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* @retval -EINVAL if dtcm_addr is not in DTCM
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* @retval -ENODEV if there is no DTCM allocation in flexram
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*/
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int memc_flexram_set_dtcm_magic_addr(uint32_t dtcm_addr);
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#endif /* CONFIG_MEMC_NXP_FLEXRAM_MAGIC_ADDR_API */
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