From bef26a7fcaa228c8bc591d975b4b0a2b76fcdecf Mon Sep 17 00:00:00 2001
From: Kalle Valo <kvalo@qca.qualcomm.com>
Date: Wed, 12 Oct 2011 09:58:28 +0300
Subject: ath6kl: fix firmware start address for ar6003 hw2.0

Sangwook found out that commit 639d0b89 ("ath6kl: read firmware start
address from hardware") broke firmware boot on ar6003 hw2.0 as it seems
it's not posible to automatically query the address from hardware. So
we need to hardcode the address for hw2.0.

Reported-by: Sangwook Lee <sangwook.lee@linaro.org>
Tested-by: Sangwook Lee <sangwook.lee@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index aa4dfd5..51ac626 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1182,6 +1182,7 @@ static int ath6kl_upload_board_file(struct ath6kl *ar)
 static int ath6kl_upload_otp(struct ath6kl *ar)
 {
 	u32 address, param;
+	bool from_hw = false;
 	int ret;
 
 	if (WARN_ON(ar->fw_otp == NULL))
@@ -1210,15 +1211,20 @@ static int ath6kl_upload_otp(struct ath6kl *ar)
 		return ret;
 	}
 
-	ar->hw.app_start_override_addr = address;
+	if (ar->hw.app_start_override_addr == 0) {
+		ar->hw.app_start_override_addr = address;
+		from_hw = true;
+	}
 
-	ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr 0x%x\n",
+	ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
+		   from_hw ? " (from hw)" : "",
 		   ar->hw.app_start_override_addr);
 
 	/* execute the OTP code */
-	ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n", address);
+	ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
+		   ar->hw.app_start_override_addr);
 	param = 0;
-	ath6kl_bmi_execute(ar, address, &param);
+	ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, &param);
 
 	return ret;
 }
@@ -1420,6 +1426,10 @@ static int ath6kl_init_hw_params(struct ath6kl *ar)
 		ar->hw.app_load_addr = AR6003_REV2_APP_LOAD_ADDRESS;
 		ar->hw.board_ext_data_addr = AR6003_REV2_BOARD_EXT_DATA_ADDRESS;
 		ar->hw.reserved_ram_size = AR6003_REV2_RAM_RESERVE_SIZE;
+
+		/* hw2.0 needs override address hardcoded */
+		ar->hw.app_start_override_addr = 0x944C00;
+
 		break;
 	case AR6003_REV3_VERSION:
 		ar->hw.dataset_patch_addr = AR6003_REV3_DATASET_PATCH_ADDRESS;
-- 
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