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From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Joel Stanley" <joel@jms.id.au>,
	"Luc Michel" <luc.michel@amd.com>,
	"Francisco Iglesias" <francisco.iglesias@amd.com>,
	qemu-block@nongnu.org,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Vincent Palatin" <vpalatin@chromium.org>,
	"Sai Pavan Boddu" <sai.pavan.boddu@amd.com>,
	"Bin Meng" <bmeng.cn@gmail.com>,
	"Cédric Le Goater" <clg@kaod.org>
Subject: [RFC PATCH 17/19] hw/sd/sdcard: Support boot area in emmc image
Date: Thu, 27 Jun 2024 19:10:57 +0200	[thread overview]
Message-ID: <20240627171059.84349-18-philmd@linaro.org> (raw)
In-Reply-To: <20240627171059.84349-1-philmd@linaro.org>

From: Joel Stanley <joel@jms.id.au>

This assumes a specially constructed image:

  dd if=/dev/zero of=mmc-bootarea.img count=2 bs=1M
  dd if=u-boot-spl.bin of=mmc-bootarea.img conv=notrunc
  dd if=u-boot.bin of=mmc-bootarea.img conv=notrunc count=64 bs=1K
  cat mmc-bootarea.img obmc-phosphor-image.wic > mmc.img
  truncate --size 16GB mmc.img
  truncate --size 128MB mmc-bootarea.img

For now this still requires a mtd image to load the SPL:

  qemu-system-arm -M tacoma-bmc -nographic \
   -global driver=sd-card,property=emmc,value=true \
   -drive file=mmc.img,if=sd,index=2 \
   -drive file=mmc-bootarea.img,if=mtd,format=raw

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/sd/sd.h |  1 +
 hw/sd/sd.c         | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index d35a839f5e..07435d2e17 100644
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -132,6 +132,7 @@ struct SDCardClass {
     bool (*get_readonly)(SDState *sd);
     void (*set_cid)(SDState *sd);
     void (*set_csd)(SDState *sd, uint64_t size);
+    uint32_t (*bootpart_offset)(SDState *sd);
 
     const struct SDProto *proto;
 };
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index e7d8b9c0fb..2d49be61f6 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -783,6 +783,12 @@ static inline uint64_t sd_addr_to_wpnum(uint64_t addr)
     return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
 }
 
+
+static unsigned sd_boot_capacity_bytes(SDState *sd)
+{
+    return sd->ext_csd[EXT_CSD_BOOT_MULT] << 17;
+}
+
 static void sd_reset(DeviceState *dev)
 {
     SDState *sd = SD_CARD(dev);
@@ -984,9 +990,40 @@ void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
     qemu_set_irq(insert, sd->blk ? blk_is_inserted(sd->blk) : 0);
 }
 
+/*
+ * This requires a disk image that has two boot partitions inserted at the
+ * beginning of it. The size of the boot partitions are configured in the
+ * ext_csd structure, which is hardcoded in qemu. They are currently set to
+ * 1MB each.
+ */
+static uint32_t sd_emmc_bootpart_offset(SDState *sd)
+{
+    unsigned int access = sd->ext_csd[EXT_CSD_PART_CONFIG] &
+        EXT_CSD_PART_CONFIG_ACC_MASK;
+    unsigned int boot_capacity = sd_boot_capacity_bytes(sd);
+
+    switch (access) {
+    case EXT_CSD_PART_CONFIG_ACC_DEFAULT:
+        return boot_capacity * 2;
+    case EXT_CSD_PART_CONFIG_ACC_BOOT0:
+        return 0;
+    case EXT_CSD_PART_CONFIG_ACC_BOOT0 + 1:
+        return boot_capacity * 1;
+    default:
+         g_assert_not_reached();
+    }
+}
+
+static uint32_t sd_bootpart_offset(SDState *sd)
+{
+    SDCardClass *sc = SD_CARD_GET_CLASS(sd);
+    return sc->bootpart_offset ? sc->bootpart_offset(sd) : 0;
+}
+
 static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
 {
     trace_sdcard_read_block(addr, len);
+    addr += sd_bootpart_offset(sd);
     if (!sd->blk || blk_pread(sd->blk, addr, len, sd->data, 0) < 0) {
         fprintf(stderr, "sd_blk_read: read error on host side\n");
     }
@@ -995,6 +1032,7 @@ static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
 static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len)
 {
     trace_sdcard_write_block(addr, len);
+    addr += sd_bootpart_offset(sd);
     if (!sd->blk || blk_pwrite(sd->blk, addr, len, sd->data, 0) < 0) {
         fprintf(stderr, "sd_blk_write: write error on host side\n");
     }
@@ -2833,6 +2871,7 @@ static void emmc_class_init(ObjectClass *klass, void *data)
     dc->realize = emmc_realize;
     sc->proto = &sd_proto_emmc;
     sc->set_csd = sd_emmc_set_csd;
+    sc->bootpart_offset = sd_emmc_bootpart_offset;
 }
 
 static const TypeInfo sd_types[] = {
-- 
2.41.0



  parent reply	other threads:[~2024-06-27 17:14 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-27 17:10 [PATCH 00/19] hw/sd: Add support for eMMC cards Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 01/19] hw/sd/sdcard: Introduce set_csd/set_cid handlers Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 02/19] hw/sd/sdcard: Cover more SDCardStates Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 03/19] hw/sd/sdcard: Basis for eMMC support Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 04/19] hw/sd/sdcard: Register generic command handlers Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 05/19] hw/sd/sdcard: Register unimplemented " Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 06/19] hw/sd/sdcard: Add emmc_cmd_SET_RELATIVE_ADDR() handler Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 07/19] hw/sd/sdcard: Add emmc_cmd_SEND_OP_COND handler (CMD1) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 08/19] hw/sd/sdcard: Fix SET_BLOCK_COUNT command argument on eMMC (CMD23) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 09/19] hw/sd/sdcard: Add mmc_cmd_PROGRAM_CID handler (CMD26) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [PATCH 10/19] hw/sd/sdcard: Implement eMMC sleep state (CMD5) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 11/19] hw/sd/sdcard: Add experimental 'x-aspeed-emmc-kludge' property Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 12/19] hw/sd/sdcard: Adapt sd_cmd_ALL_SEND_CID handler for eMMC (CMD2) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 13/19] hw/sd/sdcard: Adapt sd_cmd_APP_CMD handler for eMMC (CMD55) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 14/19] hw/sd/sdcard: Add emmc_cmd_SEND_EXT_CSD handler (CMD8) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 15/19] hw/sd/sdcard: add emmc_cmd_SEND_TUNING_BLOCK handler (CMD21) Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 16/19] hw/sd/sdcard: Add mmc SWITCH function support (CMD6) Philippe Mathieu-Daudé
2024-06-27 17:10 ` Philippe Mathieu-Daudé [this message]
2024-06-27 17:10 ` [RFC PATCH 18/19] hw/sd/sdcard: Subtract bootarea size from blk Philippe Mathieu-Daudé
2024-06-27 17:10 ` [RFC PATCH 19/19] hw/sd/sdcard: Add boot config support Philippe Mathieu-Daudé
2024-06-28  6:46 ` [PATCH 00/19] hw/sd: Add support for eMMC cards Cédric Le Goater

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