ra8_io_blockdev_sdram.c

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#include "ra8_io_blockdev_sdram.h"
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_check.h"
#include "ra8_err.h"
#include "ra8_io_blockdev_ram.h"
#include "ra8_sdramc.h"
#include "ra8_sdramc_regs.h"

static const char* const s_tag = "ra8_io_blockdev_sdram";

typedef enum : uint32_t {
  k_ra8_io_sdram_min_blocks = 1, 
} ra8_io_sdram_const_t;

RA8_INTERNAL
RA8_INTERNAL static uint32_t internal_sdram_max_blocks(void)
{
  return (uint32_t)k_ra8_sdram_size_bytes / (uint32_t)k_ra8_io_block_size_bytes;
}
 
ra8_err_t ra8_io_blockdev_sdram_init(ra8_io_blockdev_t*           bd,
                                     ra8_io_blockdev_ram_state_t* state,
                                     uint32_t                     block_count)
{
  RA8_CHECK_NULL_PTR(bd, s_tag, "bd must not be nullptr");
  RA8_CHECK_NULL_PTR(state, s_tag, "state must not be nullptr");
  if (block_count < (uint32_t)k_ra8_io_sdram_min_blocks) {
    return k_ra8_err_invalid_size;
  }
  if (block_count > internal_sdram_max_blocks()) {
    return k_ra8_err_invalid_size;
  }
  RA8_RETURN_ON_ERROR(ra8_sdramc_init(), s_tag, "sdram bring-up");
  return ra8_io_blockdev_ram_init(bd,
                                  state,
                                  (uint8_t*)(uintptr_t)k_ra8_sdram_base_addr,
                                  block_count,
                                  false);
}