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remoteproc: imx_rproc: add i.MX specific parse fw hook
The hook is used to parse memory-regions and load resource table from the address the remote processor published. Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/1615029865-23312-8-git-send-email-peng.fan@oss.nxp.com Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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@ -10,6 +10,7 @@
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#include <linux/mfd/syscon.h>
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#include <linux/module.h>
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#include <linux/of_address.h>
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#include <linux/of_reserved_mem.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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@ -241,10 +242,102 @@ static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *i
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return va;
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}
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static int imx_rproc_mem_alloc(struct rproc *rproc,
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struct rproc_mem_entry *mem)
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{
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struct device *dev = rproc->dev.parent;
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void *va;
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dev_dbg(dev, "map memory: %p+%zx\n", &mem->dma, mem->len);
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va = ioremap_wc(mem->dma, mem->len);
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if (IS_ERR_OR_NULL(va)) {
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dev_err(dev, "Unable to map memory region: %p+%zx\n",
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&mem->dma, mem->len);
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return -ENOMEM;
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}
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/* Update memory entry va */
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mem->va = va;
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return 0;
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}
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static int imx_rproc_mem_release(struct rproc *rproc,
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struct rproc_mem_entry *mem)
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{
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dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
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iounmap(mem->va);
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return 0;
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}
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static int imx_rproc_parse_memory_regions(struct rproc *rproc)
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{
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struct imx_rproc *priv = rproc->priv;
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struct device_node *np = priv->dev->of_node;
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struct of_phandle_iterator it;
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struct rproc_mem_entry *mem;
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struct reserved_mem *rmem;
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u32 da;
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/* Register associated reserved memory regions */
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of_phandle_iterator_init(&it, np, "memory-region", NULL, 0);
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while (of_phandle_iterator_next(&it) == 0) {
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/*
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* Ignore the first memory region which will be used vdev buffer.
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* No need to do extra handlings, rproc_add_virtio_dev will handle it.
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*/
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if (!strcmp(it.node->name, "vdev0buffer"))
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continue;
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rmem = of_reserved_mem_lookup(it.node);
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if (!rmem) {
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dev_err(priv->dev, "unable to acquire memory-region\n");
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return -EINVAL;
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}
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/* No need to translate pa to da, i.MX use same map */
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da = rmem->base;
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/* Register memory region */
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mem = rproc_mem_entry_init(priv->dev, NULL, (dma_addr_t)rmem->base, rmem->size, da,
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imx_rproc_mem_alloc, imx_rproc_mem_release,
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it.node->name);
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if (mem)
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rproc_coredump_add_segment(rproc, da, rmem->size);
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else
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return -ENOMEM;
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rproc_add_carveout(rproc, mem);
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}
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return 0;
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}
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static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
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{
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int ret = imx_rproc_parse_memory_regions(rproc);
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if (ret)
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return ret;
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ret = rproc_elf_load_rsc_table(rproc, fw);
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if (ret)
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dev_info(&rproc->dev, "No resource table in elf\n");
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return 0;
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}
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static const struct rproc_ops imx_rproc_ops = {
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.start = imx_rproc_start,
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.stop = imx_rproc_stop,
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.da_to_va = imx_rproc_da_to_va,
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.load = rproc_elf_load_segments,
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.parse_fw = imx_rproc_parse_fw,
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.find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
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.sanity_check = rproc_elf_sanity_check,
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.get_boot_addr = rproc_elf_get_boot_addr,
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};
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static int imx_rproc_addr_init(struct imx_rproc *priv,
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