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GET /api/patches/2217989/?format=api
{ "id": 2217989, "url": "http://patchwork.ozlabs.org/api/patches/2217989/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260331080117.2370092-4-ilias.apalodimas@linaro.org/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260331080117.2370092-4-ilias.apalodimas@linaro.org>", "list_archive_url": null, "date": "2026-03-31T08:01:13", "name": "[v2,3/4] fdtdec: Introduce fdtdec_setup_ram_size() to determine the memory size", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "9b1e0ca98a77f978748f902d6a4c9e4b0abbcca9", "submitter": { "id": 74147, "url": "http://patchwork.ozlabs.org/api/people/74147/?format=api", "name": "Ilias Apalodimas", "email": "ilias.apalodimas@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260331080117.2370092-4-ilias.apalodimas@linaro.org/mbox/", "series": [ { "id": 498138, "url": "http://patchwork.ozlabs.org/api/series/498138/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=498138", "date": "2026-03-31T08:01:10", "name": "Relocate U-Boot in the last bank", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/498138/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2217989/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2217989/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=yr7fzUOv;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; 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Similarly the overall memory\nsize must be calculated when U-Boot gets relocated to the actual end of\nall available DRAM.\n\nPre-patch:\nU-Boot 2026.04-rc5-00012-g5789f787c8a6-dirty (Mar 31 2026 - 09:13:34 +0300)\nDRAM: 4 GiB (total 8 GiB)\n\nPost-patch:\nU-Boot 2026.04-rc5-00012-g5789f787c8a6 (Mar 31 2026 - 09:12:59 +0300)\nDRAM: 8 GiB\n\nSigned-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>\n---\n include/fdtdec.h | 15 +++++++++++++++\n lib/fdtdec.c | 18 ++++++++++++++++++\n 2 files changed, 33 insertions(+)", "diff": "diff --git a/include/fdtdec.h b/include/fdtdec.h\nindex 26e40c3cdb46..9bccd70bbdb6 100644\n--- a/include/fdtdec.h\n+++ b/include/fdtdec.h\n@@ -965,6 +965,21 @@ int fdtdec_setup_mem_ram_top(void);\n * invalid\n */\n int fdtdec_setup_memory_banksize(void);\n+/**\n+ * fdtdec_setup_ram_size() - decode and setup setup gd->ram_size to the sum of\n+ *\t\t\t all banks\n+ *\n+ * Decode the /memory 'reg' property to determine the memory available in all\n+ * banks and populate the global data ram_size with it.\n+ *\n+ * This function should be called from a boards board_get_usable_ram_top().\n+ * This helper function allows for boards to query the device tree for the\n+ * overall memory described in as the sum of all memory banks.\n+ *\n+ * Return: 0 if OK, -EINVAL if the /memory node or reg property is missing or\n+ * invalid\n+ */\n+int fdtdec_setup_ram_size(void);\n \n /**\n * fdtdec_set_ethernet_mac_address() - set MAC address for default interface\ndiff --git a/lib/fdtdec.c b/lib/fdtdec.c\nindex bdb26d8fb75b..715662d27a8c 100644\n--- a/lib/fdtdec.c\n+++ b/lib/fdtdec.c\n@@ -1142,6 +1142,24 @@ int fdtdec_setup_memory_banksize(void)\n \treturn fdtdec_setup_mem_for_each_bank(fdtdec_setup_memory_banksize_bankfn);\n }\n \n+static void fdtdec_setup_total_ram_fn(struct resource *res, int bank)\n+{\n+\tgd->ram_size += res->end - res->start + 1;\n+}\n+\n+int fdtdec_setup_ram_size(void)\n+{\n+\tint ret;\n+\tphys_addr_t old_size = gd->ram_size;\n+\n+\tgd->ram_size = 0;\n+\tret = fdtdec_setup_mem_for_each_bank(fdtdec_setup_total_ram_fn);\n+\tif (ret)\n+\t\tgd->ram_size = old_size;\n+\n+\treturn ret;\n+}\n+\n static void fdtdec_setup_mem_size_base_lowest_bankfn(struct resource *res, int bank)\n {\n \tunsigned long base = (unsigned long)res->start;\n", "prefixes": [ "v2", "3/4" ] }