From a3d289b06bc380e3fc0deadab8a3f0062d9830f6 Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Thu, 4 Jan 2024 14:41:24 -0800
Subject: [PATCH] Add automated test case for NXP T1024 FDT.

---
 .github/workflows/test-parse-tools.yml |  46 ++++++
 hal/nxp_t1024.c                        |  21 ++-
 include/fdt.h                          |   6 +-
 src/fdt.c                              |  22 ++-
 test-app/Makefile                      |   9 +-
 tools/elf-parser/Makefile              |   2 +-
 tools/fdt-parser/bcm2710-rpi-3-b.dtb   | Bin 0 -> 33555 bytes
 tools/fdt-parser/fdt-parser.c          | 201 ++++++++++++++++++++++++-
 tools/fdt-parser/nxp_t1024.dtb         | Bin 0 -> 65537 bytes
 9 files changed, 284 insertions(+), 23 deletions(-)
 create mode 100644 .github/workflows/test-parse-tools.yml
 create mode 100644 tools/fdt-parser/bcm2710-rpi-3-b.dtb
 create mode 100755 tools/fdt-parser/nxp_t1024.dtb

diff --git a/.github/workflows/test-parse-tools.yml b/.github/workflows/test-parse-tools.yml
new file mode 100644
index 000000000..f8a2f1468
--- /dev/null
+++ b/.github/workflows/test-parse-tools.yml
@@ -0,0 +1,46 @@
+name: Test parsing tools (elf and fdt)
+
+on:
+  push:
+    branches: [ 'master', 'main', 'release/**' ]
+  pull_request:
+    branches: [ '*' ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Install cross compilers
+        run: |
+          sudo apt-get install -y gcc-arm-none-eabi gcc-powerpc-linux-gnu
+
+      - name: make distclean
+        run: |
+          make distclean
+
+      - name: Select config
+        run: |
+          cp config/examples/nxp-t1024.config .config
+
+      - name: Build wolfBoot
+        run: |
+          make
+
+      - name: Build tools
+        run: |
+          make elf-parser
+          make fdt-parser
+
+      - name: Run elf-parser test
+        run: |
+          ./tools/elf-parser/elf-parser
+
+      - name: Run fdt-parser test (nxp_t1024.dtb)
+        run: |
+          ./tools/fdt-parser/fdt-parser ./tools/fdt-parser/nxp_t1024.dtb -t
diff --git a/hal/nxp_t1024.c b/hal/nxp_t1024.c
index 48ccf02fc..6a0323750 100644
--- a/hal/nxp_t1024.c
+++ b/hal/nxp_t1024.c
@@ -1984,9 +1984,12 @@ int hal_dts_fixup(void* dts_addr)
         uint64_t core_spin_table;
 
         reg = (uint32_t*)fdt_getprop(fdt, off, "reg", NULL);
-        if (reg == NULL || *reg >= CPU_NUMCORES)
+        if (reg == NULL)
             break;
-        core = *reg;
+        core = (int)fdt32_to_cpu(*reg);
+        if (core >= CPU_NUMCORES) {
+            break; /* invalid core index */
+        }
 
         /* calculate location of spin table for core */
         core_spin_table = (uint64_t)((uintptr_t)(
@@ -2035,14 +2038,18 @@ int hal_dts_fixup(void* dts_addr)
     /* fixup the QMAN portals */
     off = fdt_node_offset_by_compatible(fdt, -1, "fsl,qman-portal");
     while (off != -FDT_ERR_NOTFOUND) {
-        const int *ci = fdt_getprop(fdt, off, "cell-index", NULL);
         uint32_t liodns[2];
-        if (!ci)
-            break;
-        i = *ci;
 
+        reg = (uint32_t*)fdt_getprop(fdt, off, "cell-index", NULL);
+        if (reg == NULL)
+            break;
+        i = (int)fdt32_to_cpu(*reg);
+        if (i >= QMAN_NUM_PORTALS) {
+            break; /* invalid index */
+        }
         liodns[0] = qp_info[i].dliodn;
         liodns[1] = qp_info[i].fliodn;
+
         wolfBoot_printf("FDT: Set %s@%d (%d), %s=%d,%d\n",
             "qman-portal", i, off, "fsl,liodn", liodns[0], liodns[1]);
         fdt_setprop(fdt, off, "fsl,liodn", liodns, sizeof(liodns));
@@ -2055,8 +2062,6 @@ int hal_dts_fixup(void* dts_addr)
     if (off != -FDT_ERR_NOTFOUND) {
         fdt_fixup_val(fdt, off, "open-pic", "clock-frequency", hal_get_bus_clk());
     }
-
-
 #endif /* !BUILD_LOADER_STAGE1 */
     return 0;
 }
diff --git a/include/fdt.h b/include/fdt.h
index 24efb3a6b..7a74a8106 100644
--- a/include/fdt.h
+++ b/include/fdt.h
@@ -130,8 +130,8 @@ int fdt_first_property_offset(const void *fdt, int nodeoffset);
 int fdt_next_property_offset(const void *fdt, int offset);
 const struct fdt_property *fdt_get_property_by_offset(const void *fdt, int offset, int *lenp);
 
-const char *fdt_get_name(const void *fdt, int nodeoffset, int *len);
-const char *fdt_get_string(const void *fdt, int stroffset, int *lenp);
+const char* fdt_get_name(const void *fdt, int nodeoffset, int *len);
+const char* fdt_get_string(const void *fdt, int stroffset, int *lenp);
 
 const void *fdt_getprop(const void *fdt, int nodeoffset, const char *name, int *lenp);
 int fdt_setprop(void *fdt, int nodeoffset, const char *name, const void *val, int len);
@@ -145,6 +145,8 @@ int fdt_fixup_str(void* fdt, int off, const char* node, const char* name, const
 int fdt_fixup_val(void* fdt, int off, const char* node, const char* name, uint32_t val);
 int fdt_fixup_val64(void* fdt, int off, const char* node, const char* name, uint64_t val);
 
+int fdt_shrink(void* fdt);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/fdt.c b/src/fdt.c
index f2bffcd5d..91039c7c3 100644
--- a/src/fdt.c
+++ b/src/fdt.c
@@ -30,6 +30,7 @@
 #include "hal.h"
 #include "printf.h"
 #include "string.h"
+#include <stdint.h>
 
 uint32_t cpu_to_fdt32(uint32_t x)
 {
@@ -293,7 +294,7 @@ const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
     return prop;
 }
 
-const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
+const char* fdt_get_name(const void *fdt, int nodeoffset, int *len)
 {
     int err;
     const struct fdt_node_header *nh = fdt_offset_ptr_(fdt, nodeoffset);
@@ -315,7 +316,7 @@ const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
     return name;
 }
 
-const char *fdt_get_string(const void *fdt, int stroffset, int *lenp)
+const char* fdt_get_string(const void *fdt, int stroffset, int *lenp)
 {
     const char *s = (const char*)fdt + fdt_off_dt_strings(fdt) + stroffset;
     if (lenp) {
@@ -370,7 +371,7 @@ const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset,
     return fdt_get_property_namelen(fdt, nodeoffset, name, strlen(name), lenp);
 }
 
-struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
+static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
     const char *name, int *lenp)
 {
     return (struct fdt_property*)(uintptr_t)
@@ -443,7 +444,7 @@ static int fdt_splice_string_(void *fdt, int newlen)
     return 0;
 }
 
-const char *fdt_find_string_(const char *strtab, int tabsize, const char *s)
+const char* fdt_find_string_(const char *strtab, int tabsize, const char *s)
 {
     int len = strlen(s) + 1;
     const char *last = strtab + tabsize - len;
@@ -584,7 +585,8 @@ int fdt_fixup_val(void* fdt, int off, const char* node, const char* name,
 int fdt_fixup_val64(void* fdt, int off, const char* node, const char* name,
     uint64_t val)
 {
-    wolfBoot_printf("FDT: Set %s (%d), %s=%lu\n", node, off, name, val);
+    wolfBoot_printf("FDT: Set %s (%d), %s=%llu\n",
+        node, off, name, (unsigned long long)val);
     val = cpu_to_fdt64(val);
     fdt_setprop(fdt, off, name, &val, sizeof(val));
     return off;
@@ -657,4 +659,14 @@ int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
     return offset;
 }
 
+int fdt_shrink(void* fdt)
+{
+    uint32_t total_size;
+    /* the last part of the FDT is the DT string, so use that offset to
+     * determine total size */
+    total_size = fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
+
+    return fdt_set_totalsize(fdt, total_size);
+}
+
 #endif /* MMU && !BUILD_LOADER_STAGE1 */
diff --git a/test-app/Makefile b/test-app/Makefile
index e0bca642c..91398def6 100644
--- a/test-app/Makefile
+++ b/test-app/Makefile
@@ -166,8 +166,13 @@ endif
 
 ifeq ($(TARGET),sim)
   APP_OBJS=app_$(TARGET).o ../test-app/libwolfboot.o ../hal/$(TARGET).o
-  # Override linker flags
-  LDFLAGS=-Wl,-Map=image.map
+  # LD on MacOS does not support "-Map="
+  LDMAPSUPPORTED=$(shell $(CC) -Wl,-Map=image.map 2>&1 | grep 'unknown option')
+  LDFLAGS=
+  ifeq ($(LDMAPSUPPORTED),)
+    # Override linker flags
+    LDFLAGS+=-Wl,-Map=image.map
+  endif
 endif
 
 ifeq ($(EXT_FLASH),1)
diff --git a/tools/elf-parser/Makefile b/tools/elf-parser/Makefile
index fd89e343c..585d8a973 100644
--- a/tools/elf-parser/Makefile
+++ b/tools/elf-parser/Makefile
@@ -4,7 +4,7 @@
 
 CC=gcc
 CFLAGS=-Wall -g -ggdb
-CFLAGS+=-I../../include -DWOLFBOOT_ELF -DELF_PARSER -DPRINTF_ENABLED
+CFLAGS+=-I../../include -DWOLFBOOT_ELF -DELF_PARSER -DDEBUG_ELF -DPRINTF_ENABLED
 EXE=elf-parser
 
 LIBS=
diff --git a/tools/fdt-parser/bcm2710-rpi-3-b.dtb b/tools/fdt-parser/bcm2710-rpi-3-b.dtb
new file mode 100644
index 0000000000000000000000000000000000000000..8a13a454f25f74122ec22b32863e379a3dc84446
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HcmV?d00001

diff --git a/tools/fdt-parser/fdt-parser.c b/tools/fdt-parser/fdt-parser.c
index e5a9306ca..aabe1bcf9 100644
--- a/tools/fdt-parser/fdt-parser.c
+++ b/tools/fdt-parser/fdt-parser.c
@@ -29,6 +29,182 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+static int gEnableUnitTest = 0;
+#define UNIT_TEST_GROW_SIZE 1024
+
+/* Test case for "nxp_t1024.dtb" */
+static int fdt_test(void* fdt)
+{
+    int off, i;
+    uint32_t *reg, oldsize;
+
+    #define DDR_ADDRESS       0
+    #define DDR_SIZE          (2048ULL * 1024ULL * 1024ULL)
+    #define CPU_NUMCORES      2
+    #define SPIN_TABLE_ADDR   0x7FF01900
+    #define ENTRY_SIZE        64
+    #define SYS_CLK           (100000000) /* 100MHz */
+    #define PLAT_CLK          (SYS_CLK * 4)
+    #define BUS_CLK           (PLAT_CLK / 2)
+    #define TIMEBASE_HZ       (PLAT_CLK / 16)
+
+    struct qportal_info {
+        uint16_t   dliodn;    /* DQRR LIODN */
+        uint16_t   fliodn;    /* frame data LIODN */
+        uint16_t   liodn_offset;
+        uint8_t    sdest;
+    };
+
+    #define SET_QP_INFO(dqrr, fdata, off, dest) \
+        { .dliodn = dqrr, .fliodn = fdata, .liodn_offset = off, .sdest = dest }
+
+    #define QMAN_NUM_PORTALS    10
+    const struct qportal_info qp_info[QMAN_NUM_PORTALS] = {
+        /* dqrr liodn, frame data liodn, liodn off, sdest */
+        SET_QP_INFO(1, 27, 1, 0),
+        SET_QP_INFO(2, 28, 1, 0),
+        SET_QP_INFO(3, 29, 1, 1),
+        SET_QP_INFO(4, 30, 1, 1),
+        SET_QP_INFO(5, 31, 1, 2),
+        SET_QP_INFO(6, 32, 1, 2),
+        SET_QP_INFO(7, 33, 1, 3),
+        SET_QP_INFO(8, 34, 1, 3),
+        SET_QP_INFO(9, 35, 1, 0),
+        SET_QP_INFO(10, 36, 1, 0)
+    };
+
+    struct liodn_id_table {
+        const char* compat;
+        uint32_t id;
+    };
+    #define SET_LIODN(fdtcomp, liodn) \
+        {.compat = fdtcomp, .id = liodn}
+
+    const struct liodn_id_table liodn_tbl[] = {
+        SET_LIODN("fsl-usb2-mph", 553),
+        SET_LIODN("fsl-usb2-dr", 554),
+        SET_LIODN("fsl,esdhc", 552),
+        SET_LIODN("fsl,pq-sata-v2", 555),
+        SET_LIODN("fsl,tdm1.0", 560),
+        SET_LIODN("fsl,qe", 559),
+        SET_LIODN("fsl,elo3-dma", 147),
+        SET_LIODN("fsl,elo3-dma", 227),
+
+        SET_LIODN("fsl,qman", 62),
+        SET_LIODN("fsl,bman", 63),
+        SET_LIODN("fsl,qoriq-pcie-v2.4", 148),
+        SET_LIODN("fsl,qoriq-pcie-v2.4", 228),
+        SET_LIODN("fsl,qoriq-pcie-v2.4", 308),
+    };
+
+    /* expand total size */
+    oldsize = fdt_totalsize(fdt);
+
+    /* fixup the memory region - single bank */
+    off = fdt_find_devtype(fdt, -1, "memory");
+    if (off != -FDT_ERR_NOTFOUND) {
+        /* build addr/size as 64-bit */
+        uint8_t ranges[sizeof(uint64_t) * 2], *p = ranges;
+        *(uint64_t*)p = cpu_to_fdt64(DDR_ADDRESS);
+        p += sizeof(uint64_t);
+        *(uint64_t*)p = cpu_to_fdt64(DDR_SIZE);
+        p += sizeof(uint64_t);
+        fdt_setprop(fdt, off, "reg", ranges, (int)(p - ranges));
+        wolfBoot_printf("FDT: Set memory, start=0x%x, size=0x%x\n",
+            DDR_ADDRESS, (uint32_t)DDR_SIZE);
+    }
+
+    /* fixup CPU status and, release address and enable method */
+    off = fdt_find_devtype(fdt, -1, "cpu");
+    while (off != -FDT_ERR_NOTFOUND) {
+        int core;
+        uint64_t core_spin_table_addr;
+
+        reg = (uint32_t*)fdt_getprop(fdt, off, "reg", NULL);
+        if (reg == NULL)
+            break;
+        core = (int)fdt32_to_cpu(*reg);
+        if (core >= CPU_NUMCORES) {
+            break; /* invalid core index */
+        }
+
+        /* calculate location of spin table for core */
+        core_spin_table_addr = (uint64_t)((uintptr_t)(
+                (uint8_t*)SPIN_TABLE_ADDR + (core * ENTRY_SIZE)));
+
+        fdt_fixup_str(fdt, off, "cpu", "status", (core == 0) ? "okay" : "disabled");
+        fdt_fixup_val64(fdt, off, "cpu", "cpu-release-addr", core_spin_table_addr);
+        fdt_fixup_str(fdt, off, "cpu", "enable-method", "spin-table");
+        fdt_fixup_val(fdt, off, "cpu", "timebase-frequency", TIMEBASE_HZ);
+        fdt_fixup_val(fdt, off, "cpu", "clock-frequency", PLAT_CLK);
+        fdt_fixup_val(fdt, off, "cpu", "bus-frequency", PLAT_CLK);
+
+        off = fdt_find_devtype(fdt, off, "cpu");
+    }
+
+    /* fixup the soc clock */
+    off = fdt_find_devtype(fdt, -1, "soc");
+    if (off != -FDT_ERR_NOTFOUND) {
+        fdt_fixup_val(fdt, off, "soc", "bus-frequency", PLAT_CLK);
+    }
+
+    /* fixup the serial clocks */
+    off = fdt_find_devtype(fdt, -1, "serial");
+    while (off != -FDT_ERR_NOTFOUND) {
+        fdt_fixup_val(fdt, off, "serial", "clock-frequency", BUS_CLK);
+        off = fdt_find_devtype(fdt, off, "serial");
+    }
+
+    /* fixup the QE bridge and bus blocks */
+    off = fdt_find_devtype(fdt, -1, "qe");
+    if (off != -FDT_ERR_NOTFOUND) {
+        fdt_fixup_val(fdt, off, "qe", "clock-frequency", BUS_CLK);
+        fdt_fixup_val(fdt, off, "qe", "bus-frequency", BUS_CLK);
+        fdt_fixup_val(fdt, off, "qe", "brg-frequency", BUS_CLK/2);
+    }
+
+    /* fixup the LIODN */
+    for (i=0; i<(int)(sizeof(liodn_tbl)/sizeof(struct liodn_id_table)); i++) {
+        off = fdt_node_offset_by_compatible(fdt, -1, liodn_tbl[i].compat);
+        if (off >= 0) {
+            fdt_fixup_val(fdt, off, liodn_tbl[i].compat, "fsl,liodn",
+                liodn_tbl[i].id);
+        }
+    }
+
+    /* fixup the QMAN portals */
+    off = fdt_node_offset_by_compatible(fdt, -1, "fsl,qman-portal");
+    while (off != -FDT_ERR_NOTFOUND) {
+        const int *ci = fdt_getprop(fdt, off, "cell-index", NULL);
+        uint32_t liodns[2];
+        if (!ci)
+            break;
+        i = fdt32_to_cpu(*ci);
+
+        liodns[0] = qp_info[i].dliodn;
+        liodns[1] = qp_info[i].fliodn;
+        wolfBoot_printf("FDT: Set %s@%d (%d), %s=%d,%d\n",
+            "qman-portal", i, off, "fsl,liodn", liodns[0], liodns[1]);
+        fdt_setprop(fdt, off, "fsl,liodn", liodns, sizeof(liodns));
+
+        off = fdt_node_offset_by_compatible(fdt, off, "fsl,qman-portal");
+    }
+
+    /* mpic clock */
+    off = fdt_find_devtype(fdt, -1, "open-pic");
+    if (off != -FDT_ERR_NOTFOUND) {
+        fdt_fixup_val(fdt, off, "open-pic", "clock-frequency", BUS_CLK);
+    }
+
+    /* resize the device tree */
+    fdt_shrink(fdt);
+
+    /* display information */
+    printf("FDT Updated: Size %d -> %d\n", oldsize, fdt_totalsize(fdt));
+
+    return 0;
+}
+
 void print_bin(const uint8_t* buffer, uint32_t length)
 {
     uint32_t i, notprintable = 0;
@@ -59,7 +235,7 @@ void print_bin(const uint8_t* buffer, uint32_t length)
 
 int dts_parse(void* dts_addr)
 {
-    int ret;
+    int ret = 0;
     struct fdt_header *fdt = (struct fdt_header *)dts_addr;
     const struct fdt_property* prop;
     int nlen, plen, slen;
@@ -113,7 +289,7 @@ int dts_parse(void* dts_addr)
         }
     }
 
-    return 0;
+    return ret;
 }
 
 int main(int argc, char *argv[])
@@ -127,6 +303,12 @@ int main(int argc, char *argv[])
     if (argc >= 2) {
         filename = argv[1];
     }
+    while (argc > 2) {
+        if (strcmp(argv[argc-1], "-t") == 0) {
+            gEnableUnitTest = 1;
+        }
+        argc--;
+    }
 
     printf("FDT Parser (%s):\n", filename);
     if (filename == NULL) {
@@ -144,7 +326,13 @@ int main(int argc, char *argv[])
         fseek(f, 0, SEEK_END);
         imageSz = ftell(f);
         fseek(f, 0, SEEK_SET);
-        image = malloc(imageSz);
+        if (gEnableUnitTest) {
+            /* add extra 1KB for testing expansion room */
+            image = malloc(imageSz + UNIT_TEST_GROW_SIZE);
+        }
+        else {
+            image = malloc(imageSz);
+        }
         if (image == NULL) {
             printf("Allocate %lu failed!\n", imageSz);
             ret = -1;
@@ -159,13 +347,16 @@ int main(int argc, char *argv[])
     }
     fclose(f);
 
+    if (ret == 0 && gEnableUnitTest) {
+        ret = fdt_test(image);
+    }
     if (ret == 0) {
         ret = dts_parse(image);
     }
 
-    printf("Return %d\n", ret);
-
     free(image);
 
+    printf("Return %d\n", ret);
+
     return ret;
 }
diff --git a/tools/fdt-parser/nxp_t1024.dtb b/tools/fdt-parser/nxp_t1024.dtb
new file mode 100755
index 0000000000000000000000000000000000000000..03acde96ff8a6c30b0fc15eaeeb4ec6046d8292a
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