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authorYe.Li <B37916@freescale.com>2015-02-01 23:22:19 +0800
committerPeng Fan <Peng.Fan@freescale.com>2015-04-29 14:56:22 +0800
commitc0682026587f676640a27891a911d157a0dab63c (patch)
tree62e2045b1466c3d7951f2674781d1d1dfb3a1714 /arch
parentb2e49750bb385dbd248ffb6a0d4e80f6e4a6edb5 (diff)
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MLK-10176-9 imx: mx7: add plugin boot support
Add mx7_plugin.S to support building plugin boot image. Signed-off-by: Ye.Li <B37916@freescale.com> (cherry picked from commit 8d15f44ca0c2d694b87eb6ab6db5f27496924b4a) Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/arch-mx7/mx7_plugin.S103
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx7/mx7_plugin.S b/arch/arm/include/asm/arch-mx7/mx7_plugin.S
new file mode 100644
index 0000000..86bedf9
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx7/mx7_plugin.S
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <config.h>
+
+#define ROM_API_TABLE_BASE_ADDR_LEGACY 0x180
+#define ROM_VERSION_OFFSET 0x80
+#define ROM_API_HWCNFG_SETUP_OFFSET 0x08
+
+plugin_start:
+
+ push {r0-r4, lr}
+
+ imx7_ddr_setting
+ imx7_clock_gating
+ imx7_qos_setting
+
+/*
+ * The following is to fill in those arguments for this ROM function
+ * pu_irom_hwcnfg_setup(void **start, size_t *bytes, const void *boot_data)
+ * This function is used to copy data from the storage media into DDR.
+ * start - Initial (possibly partial) image load address on entry.
+ * Final image load address on exit.
+ * bytes - Initial (possibly partial) image size on entry.
+ * Final image size on exit.
+ * boot_data - Initial @ref ivt Boot Data load address.
+ */
+ adr r0, boot_data2
+ adr r1, image_len2
+ adr r2, boot_data2
+
+/*
+ * check the _pu_irom_api_table for the address
+ */
+before_calling_rom___pu_irom_hwcnfg_setup:
+ ldr r3, =ROM_VERSION_OFFSET
+ ldr r4, [r3]
+ ldr r3, =ROM_API_TABLE_BASE_ADDR_LEGACY
+ ldr r4, [r3, #ROM_API_HWCNFG_SETUP_OFFSET]
+ blx r4
+after_calling_rom___pu_irom_hwcnfg_setup:
+
+
+/* To return to ROM from plugin, we need to fill in these argument.
+ * Here is what need to do:
+ * Need to construct the paramters for this function before return to ROM:
+ * plugin_download(void **start, size_t *bytes, UINT32 *ivt_offset)
+ */
+ pop {r0-r4, lr}
+ push {r5}
+ ldr r5, boot_data2
+ str r5, [r0]
+ ldr r5, image_len2
+ str r5, [r1]
+ ldr r5, second_ivt_offset
+ str r5, [r2]
+ mov r0, #1
+ pop {r5}
+
+ /* return back to ROM code */
+ bx lr
+
+/* make the following data right in the end of the output*/
+.ltorg
+
+#define FLASH_OFFSET 0x400
+
+/*
+ * second_ivt_offset is the offset from the "second_ivt_header" to
+ * "image_copy_start", which involves FLASH_OFFSET, plus the first
+ * ivt_header, the plugin code size itself recorded by "ivt2_header"
+ */
+
+second_ivt_offset: .long (ivt2_header + 0x2C + FLASH_OFFSET)
+
+/*
+ * The following is the second IVT header plus the second boot data
+ */
+ivt2_header: .long 0x0
+app2_code_jump_v: .long 0x0
+reserv3: .long 0x0
+dcd2_ptr: .long 0x0
+boot_data2_ptr: .long 0x0
+self_ptr2: .long 0x0
+app_code_csf2: .long 0x0
+reserv4: .long 0x0
+boot_data2: .long 0x0
+image_len2: .long 0x0
+plugin2: .long 0x0