mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-03-17 23:37:01 +00:00
imx8m: disable nodes before kernel/mfgtool boot for fused part
To fused part, we need to disable nodes of dtb to let kernel boot. To mfgtool, USB issue when using super-speed for mfgtool, temporally work around the problem to use high-speed only. Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan
parent
2707faf01f
commit
6036dba1c8
1 changed files with 334 additions and 1 deletions
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@ -428,11 +428,297 @@ bool is_usb_boot(void)
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}
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#ifdef CONFIG_OF_SYSTEM_SETUP
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int ft_system_setup(void *blob, bd_t *bd)
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bool check_fdt_new_path(void *blob)
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{
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const char *soc_path = "/soc@0";
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int nodeoff;
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nodeoff = fdt_path_offset(blob, soc_path);
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if (nodeoff < 0)
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return false;
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return true;
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}
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static int disable_fdt_nodes(void *blob, const char *const nodes_path[], int size_array)
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{
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int i = 0;
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int rc;
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int nodeoff;
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const char *status = "disabled";
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for (i = 0; i < size_array; i++) {
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nodeoff = fdt_path_offset(blob, nodes_path[i]);
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if (nodeoff < 0)
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continue; /* Not found, skip it */
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printf("Found %s node\n", nodes_path[i]);
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add_status:
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rc = fdt_setprop(blob, nodeoff, "status", status, strlen(status) + 1);
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if (rc) {
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if (rc == -FDT_ERR_NOSPACE) {
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rc = fdt_increase_size(blob, 512);
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if (!rc)
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goto add_status;
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}
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printf("Unable to update property %s:%s, err=%s\n",
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nodes_path[i], "status", fdt_strerror(rc));
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} else {
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printf("Modify %s:%s disabled\n",
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nodes_path[i], "status");
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}
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}
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return 0;
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}
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#ifdef CONFIG_IMX8MQ
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bool check_dcss_fused(void)
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{
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struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
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struct fuse_bank *bank = &ocotp->bank[1];
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struct fuse_bank1_regs *fuse =
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(struct fuse_bank1_regs *)bank->fuse_regs;
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u32 value = readl(&fuse->tester4);
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if (value & 0x4000000)
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return true;
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return false;
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}
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static int disable_mipi_dsi_nodes(void *blob)
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{
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static const char * const nodes_path[] = {
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"/mipi_dsi@30A00000",
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"/mipi_dsi_bridge@30A00000",
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"/dsi_phy@30A00300",
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"/soc@0/bus@30800000/mipi_dsi@30a00000",
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"/soc@0/bus@30800000/dphy@30a00300"
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};
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return disable_fdt_nodes(blob, nodes_path, ARRAY_SIZE(nodes_path));
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}
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static int disable_dcss_nodes(void *blob)
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{
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static const char * const nodes_path[] = {
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"/dcss@0x32e00000",
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"/dcss@32e00000",
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"/hdmi@32c00000",
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"/hdmi_cec@32c33800",
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"/hdmi_drm@32c00000",
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"/display-subsystem",
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"/sound-hdmi",
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"/sound-hdmi-arc",
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"/soc@0/bus@32c00000/display-controller@32e00000",
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"/soc@0/bus@32c00000/hdmi@32c00000",
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};
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return disable_fdt_nodes(blob, nodes_path, ARRAY_SIZE(nodes_path));
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}
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static int check_mipi_dsi_nodes(void *blob)
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{
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static const char * const lcdif_path[] = {
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"/lcdif@30320000",
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"/soc@0/bus@30000000/lcdif@30320000"
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};
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static const char * const mipi_dsi_path[] = {
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"/mipi_dsi@30A00000",
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"/soc@0/bus@30800000/mipi_dsi@30a00000"
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};
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static const char * const lcdif_ep_path[] = {
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"/lcdif@30320000/port@0/mipi-dsi-endpoint",
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"/soc@0/bus@30000000/lcdif@30320000/port@0/endpoint"
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};
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static const char * const mipi_dsi_ep_path[] = {
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"/mipi_dsi@30A00000/port@1/endpoint",
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"/soc@0/bus@30800000/mipi_dsi@30a00000/ports/port@0/endpoint"
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};
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int lookup_node;
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int nodeoff;
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bool new_path = check_fdt_new_path(blob);
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int i = new_path ? 1 : 0;
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nodeoff = fdt_path_offset(blob, lcdif_path[i]);
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if (nodeoff < 0 || !fdtdec_get_is_enabled(blob, nodeoff)) {
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/*
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* If can't find lcdif node or lcdif node is disabled,
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* then disable all mipi dsi, since they only can input
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* from DCSS
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*/
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return disable_mipi_dsi_nodes(blob);
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}
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nodeoff = fdt_path_offset(blob, mipi_dsi_path[i]);
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if (nodeoff < 0 || !fdtdec_get_is_enabled(blob, nodeoff))
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return 0;
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nodeoff = fdt_path_offset(blob, lcdif_ep_path[i]);
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if (nodeoff < 0) {
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/*
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* If can't find lcdif endpoint, then disable all mipi dsi,
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* since they only can input from DCSS
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*/
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return disable_mipi_dsi_nodes(blob);
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}
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lookup_node = fdtdec_lookup_phandle(blob, nodeoff, "remote-endpoint");
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nodeoff = fdt_path_offset(blob, mipi_dsi_ep_path[i]);
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if (nodeoff > 0 && nodeoff == lookup_node)
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return 0;
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return disable_mipi_dsi_nodes(blob);
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}
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#endif
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int disable_vpu_nodes(void *blob)
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{
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static const char * const nodes_path_8mq[] = {
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"/vpu@38300000",
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"/soc@0/vpu@38300000"
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};
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static const char * const nodes_path_8mm[] = {
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"/vpu_g1@38300000",
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"/vpu_g2@38310000",
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"/vpu_h1@38320000"
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};
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static const char * const nodes_path_8mp[] = {
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"/vpu_g1@38300000",
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"/vpu_g2@38310000",
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"/vpu_vc8000e@38320000"
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};
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if (is_imx8mq())
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return disable_fdt_nodes(blob, nodes_path_8mq, ARRAY_SIZE(nodes_path_8mq));
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else if (is_imx8mm())
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return disable_fdt_nodes(blob, nodes_path_8mm, ARRAY_SIZE(nodes_path_8mm));
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else if (is_imx8mp())
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return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp));
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else
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return -EPERM;
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}
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int disable_gpu_nodes(void *blob)
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{
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static const char * const nodes_path_8mn[] = {
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"/gpu@38000000"
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};
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return disable_fdt_nodes(blob, nodes_path_8mn, ARRAY_SIZE(nodes_path_8mn));
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}
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int disable_npu_nodes(void *blob)
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{
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static const char * const nodes_path_8mp[] = {
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"/vipsi@38500000"
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};
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return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp));
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}
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int disable_isp_nodes(void *blob)
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{
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static const char * const nodes_path_8mp[] = {
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"/soc@0/bus@32c00000/camera/isp@32e10000",
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"/soc@0/bus@32c00000/camera/isp@32e20000"
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};
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return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp));
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}
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int disable_dsp_nodes(void *blob)
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{
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static const char * const nodes_path_8mp[] = {
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"/dsp@3b6e8000"
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};
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return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp));
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}
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static int disable_cpu_nodes(void *blob, u32 disabled_cores)
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{
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static const char * const nodes_path[] = {
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"/cpus/cpu@1",
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"/cpus/cpu@2",
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"/cpus/cpu@3",
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};
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u32 i = 0;
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int rc;
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int nodeoff;
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if (disabled_cores > 3)
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return -EINVAL;
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i = 3 - disabled_cores;
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for (; i < 3; i++) {
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nodeoff = fdt_path_offset(blob, nodes_path[i]);
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if (nodeoff < 0)
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continue; /* Not found, skip it */
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debug("Found %s node\n", nodes_path[i]);
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rc = fdt_del_node(blob, nodeoff);
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if (rc < 0) {
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printf("Unable to delete node %s, err=%s\n",
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nodes_path[i], fdt_strerror(rc));
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} else {
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printf("Delete node %s\n", nodes_path[i]);
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}
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}
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return 0;
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}
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int ft_system_setup(void *blob, bd_t *bd)
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{
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#ifdef CONFIG_IMX8MQ
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int i = 0;
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int rc;
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int nodeoff;
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if (get_boot_device() == USB_BOOT) {
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disable_dcss_nodes(blob);
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bool new_path = check_fdt_new_path(blob);
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int v = new_path ? 1 : 0;
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static const char * const usb_dwc3_path[] = {
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"/usb@38100000/dwc3",
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"/soc@0/usb@38100000"
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};
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nodeoff = fdt_path_offset(blob, usb_dwc3_path[v]);
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if (nodeoff >= 0) {
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const char *speed = "high-speed";
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printf("Found %s node\n", usb_dwc3_path[v]);
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usb_modify_speed:
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rc = fdt_setprop(blob, nodeoff, "maximum-speed", speed, strlen(speed) + 1);
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if (rc) {
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if (rc == -FDT_ERR_NOSPACE) {
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rc = fdt_increase_size(blob, 512);
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if (!rc)
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goto usb_modify_speed;
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}
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printf("Unable to set property %s:%s, err=%s\n",
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usb_dwc3_path[v], "maximum-speed", fdt_strerror(rc));
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} else {
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printf("Modify %s:%s = %s\n",
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usb_dwc3_path[v], "maximum-speed", speed);
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}
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} else {
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printf("Can't found %s node\n", usb_dwc3_path[v]);
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}
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}
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/* Disable the CPU idle for A0 chip since the HW does not support it */
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if (is_soc_rev(CHIP_REV_1_0)) {
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@ -464,6 +750,53 @@ int ft_system_setup(void *blob, bd_t *bd)
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}
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}
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if (is_imx8mql()) {
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disable_vpu_nodes(blob);
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if (check_dcss_fused()) {
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printf("DCSS is fused\n");
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disable_dcss_nodes(blob);
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check_mipi_dsi_nodes(blob);
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}
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}
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if (is_imx8md())
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disable_cpu_nodes(blob, 2);
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#elif defined(CONFIG_IMX8MM)
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if (is_imx8mml() || is_imx8mmdl() || is_imx8mmsl())
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disable_vpu_nodes(blob);
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if (is_imx8mmd() || is_imx8mmdl())
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disable_cpu_nodes(blob, 2);
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else if (is_imx8mms() || is_imx8mmsl())
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disable_cpu_nodes(blob, 3);
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#elif defined(CONFIG_IMX8MN)
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if (is_imx8mnl() || is_imx8mndl() || is_imx8mnsl())
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disable_gpu_nodes(blob);
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if (is_imx8mnd() || is_imx8mndl())
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disable_cpu_nodes(blob, 2);
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else if (is_imx8mns() || is_imx8mnsl())
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disable_cpu_nodes(blob, 3);
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#elif defined(CONFIG_IMX8MP)
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if (is_imx8mpl() || is_imx8mp7())
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disable_vpu_nodes(blob);
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if (is_imx8mpl() || is_imx8mp6() || is_imx8mp5())
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disable_npu_nodes(blob);
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if (is_imx8mpl() || is_imx8mp5())
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disable_isp_nodes(blob);
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if (is_imx8mpl() || is_imx8mp7() || is_imx8mp6() || is_imx8mp5())
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disable_dsp_nodes(blob);
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if (is_imx8mpd())
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disable_cpu_nodes(blob, 2);
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#endif
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return 0;
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}
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#endif
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