[U-Boot] [PATCH 16/40] x86: broadwell: Improve SDRAM debugging output

[Simon Glass]

Add debugging during SDRAM init so that problems are easier to
diagnose.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 arch/x86/cpu/broadwell/sdram.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/arch/x86/cpu/broadwell/sdram.c b/arch/x86/cpu/broadwell/sdram.c
index 03a35bcf73..1b9f9840c6 100644
--- a/arch/x86/cpu/broadwell/sdram.c
+++ b/arch/x86/cpu/broadwell/sdram.c
@@ -204,16 +204,18 @@ int dram_init(void)
 
        /* Print ME state before MRC */
        ret = syscon_get_by_driver_data(X86_SYSCON_ME, &me_dev);
-       if (ret)
+       if (ret) {
+               debug("Cannot get ME (err=%d)\n", ret);
                return ret;
+       }
        intel_me_status(me_dev);
 
        /* Save ME HSIO version */
-       ret = uclass_first_device(UCLASS_PCH, &pch_dev);
-       if (ret)
+       ret = uclass_first_device_err(UCLASS_PCH, &pch_dev);
+       if (ret) {
+               debug("Cannot get PCH (err=%d)\n", ret);
                return ret;
-       if (!pch_dev)
-               return -ENODEV;
+       }
        power_state_get(pch_dev, &ps);
 
        intel_me_hsio_version(me_dev, &ps.hsio_version, &ps.hsio_checksum);
@@ -221,15 +223,17 @@ int dram_init(void)
        broadwell_fill_pei_data(pei_data);
        mainboard_fill_pei_data(pei_data);
 
-       ret = uclass_first_device(UCLASS_NORTHBRIDGE, &dev);
-       if (ret)
+       ret = uclass_first_device_err(UCLASS_NORTHBRIDGE, &dev);
+       if (ret) {
+               debug("Cannot get Northbridge (err=%d)\n", ret);
                return ret;
-       if (!dev)
-               return -ENODEV;
+       }
        size = 256;
        ret = mrc_locate_spd(dev, size, &spd_data);
-       if (ret)
+       if (ret) {
+               debug("Cannot locate SPD (err=%d)\n", ret);
                return ret;
+       }
        memcpy(pei_data->spd_data[0][0], spd_data, size);
        memcpy(pei_data->spd_data[1][0], spd_data, size);
 
@@ -239,13 +243,17 @@ int dram_init(void)
 
        debug("PEI version %#x\n", pei_data->pei_version);
        ret = mrc_common_init(dev, pei_data, true);
-       if (ret)
+       if (ret) {
+               debug("mrc_common_init() failed(err=%d)\n", ret);
                return ret;
+       }
        debug("Memory init done\n");
 
        ret = sdram_find(dev);
-       if (ret)
+       if (ret) {
+               debug("sdram_find() failed (err=%d)\n", ret);
                return ret;
+       }
        gd->ram_size = gd->arch.meminfo.total_32bit_memory;
        debug("RAM size %llx\n", (unsigned long long)gd->ram_size);
 
-- 
2.20.1.495.gaa96b0ce6b-goog

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