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@@ -14,6 +14,71 @@
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#include <linux/compiler.h>
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#include <cpu_func.h>
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+#ifndef CONFIG_IMX8M
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+const __weak struct rproc_att hostmap[] = { };
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+
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+static const struct rproc_att *get_host_mapping(unsigned long auxcore)
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+{
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+ const struct rproc_att *mmap = hostmap;
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+
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+ while (mmap && mmap->size) {
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+ if (mmap->da <= auxcore &&
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+ mmap->da + mmap->size > auxcore)
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+ return mmap;
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+ mmap++;
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+ }
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+
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+ return NULL;
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+}
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+
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+/*
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+ * A very simple elf loader for the auxilary core, assumes the image
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+ * is valid, returns the entry point address.
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+ * Translates load addresses in the elf file to the U-Boot address space.
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+ */
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+static unsigned long load_elf_image_m_core_phdr(unsigned long addr)
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+{
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+ Elf32_Ehdr *ehdr; /* ELF header structure pointer */
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+ Elf32_Phdr *phdr; /* Program header structure pointer */
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+ int i;
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+
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+ ehdr = (Elf32_Ehdr *)addr;
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+ phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);
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+
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+ /* Load each program header */
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+ for (i = 0; i < ehdr->e_phnum; ++i, ++phdr) {
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+ const struct rproc_att *mmap = get_host_mapping(phdr->p_paddr);
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+ void *dst, *src;
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+
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+ if (phdr->p_type != PT_LOAD)
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+ continue;
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+
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+ if (!mmap) {
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+ printf("Invalid aux core address: %08x",
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+ phdr->p_paddr);
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+ return 0;
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+ }
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+
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+ dst = (void *)(phdr->p_paddr - mmap->da) + mmap->sa;
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+ src = (void *)addr + phdr->p_offset;
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+
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+ debug("Loading phdr %i to 0x%p (%i bytes)\n",
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+ i, dst, phdr->p_filesz);
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+
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+ if (phdr->p_filesz)
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+ memcpy(dst, src, phdr->p_filesz);
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+ if (phdr->p_filesz != phdr->p_memsz)
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+ memset(dst + phdr->p_filesz, 0x00,
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+ phdr->p_memsz - phdr->p_filesz);
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+ flush_cache((unsigned long)dst &
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+ ~(CONFIG_SYS_CACHELINE_SIZE - 1),
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+ ALIGN(phdr->p_filesz, CONFIG_SYS_CACHELINE_SIZE));
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+ }
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+
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+ return ehdr->e_entry;
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+}
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+#endif
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+
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int arch_auxiliary_core_up(u32 core_id, ulong addr)
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{
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ulong stack, pc;
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@@ -31,7 +96,7 @@ int arch_auxiliary_core_up(u32 core_id, ulong addr)
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*/
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if (valid_elf_image(addr)) {
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stack = 0x0;
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- pc = load_elf_image_phdr(addr);
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+ pc = load_elf_image_m_core_phdr(addr);
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if (!pc)
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return CMD_RET_FAILURE;
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