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authorYe Li <ye.li@nxp.com>2019-05-16 03:18:51 +0000
committerStefano Babic <sbabic@denx.de>2019-06-11 10:42:48 +0200
commit15bae9a86d16b1e35a71bb745e5b91d8de0dfd34 (patch)
tree0b64bdabb31f2566e07cbfb3cf5275cd726637e2 /arch/arm/include
parent7ce134b7c32b7c11d79ba4a785eb75e0c26ef969 (diff)
mx7ulp: Add common plugin codes for mx7ulp
Add common plugin codes to call ROM's hwcnfg_setup and generate IVT2 header. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S93
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S b/arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S
new file mode 100644
index 0000000000..bcc804b58f
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx7ulp/mx7ulp_plugin.S
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 NXP
+ */
+
+#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}
+
+ imx7ulp_ddr_setting
+ imx7ulp_clock_gating
+ imx7ulp_qos_setting
+
+normal_boot:
+
+/*
+ * 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 parameters 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