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| author | Nitin Garg <nitin.garg@freescale.com> | 2012-12-21 12:33:49 -0600 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2012-12-21 12:33:49 -0600 |
| commit | b07b53788a970985363f6daee88e0ead9aff05b7 (patch) | |
| tree | df5095a2bc1342d4d933a9f1685fe7d6fc3f3ed9 /cpu | |
| parent | 896d566f53e7bbe6d108ba0ded08b9087b9711a9 (diff) | |
| download | u-boot-imx-b07b53788a970985363f6daee88e0ead9aff05b7.zip u-boot-imx-b07b53788a970985363f6daee88e0ead9aff05b7.tar.gz u-boot-imx-b07b53788a970985363f6daee88e0ead9aff05b7.tar.bz2 | |
ENGR00238048: Add support for processor serial ATAG in uboot for iMX53
Add support for Processor UID ATAG in uboot for iMX53. The UID is
present in Fuses bank 0 at offset 0x20.
Signed-off-by: Nitin Garg <nitin.garg@freescale.com>
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/arm_cortexa8/mx53/generic.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/cpu/arm_cortexa8/mx53/generic.c b/cpu/arm_cortexa8/mx53/generic.c index 83dbd4b..ca7e0be 100644 --- a/cpu/arm_cortexa8/mx53/generic.c +++ b/cpu/arm_cortexa8/mx53/generic.c @@ -22,6 +22,8 @@ #include <common.h> #include <asm/arch/mx53.h> +#include <asm/imx_iim.h> +#include <asm/setup.h> #include <asm/errno.h> #include <asm/io.h> #include "crm_regs.h" @@ -1258,3 +1260,29 @@ int fastboot_check_and_clean_flag(void) } #endif +#ifdef CONFIG_SERIAL_TAG +void get_board_serial(struct tag_serialnr *serialnr) +{ + int i = 0, tmp = 0; + u32 *iim0_unique_id_base = + (u32 *)(IIM_BASE_ADDR + IIM_BANK_AREA_0_OFFSET + + CONFIG_IIM_UNIQUE_ID_OFFSET); + + serialnr->low = 0; + serialnr->high = 0; + + /* Read the 32-63 bits of UID from 4 registers */ + for (i = 0; i < 4; ++i, ++iim0_unique_id_base) { + tmp = readl(iim0_unique_id_base); + serialnr->high = serialnr->high << 8; + serialnr->high |= (tmp & 0xff); + } + + /* Read the 0-31 bits of UID from next 4 registers */ + for (i = 0; i < 4; ++i, ++iim0_unique_id_base) { + tmp = readl(iim0_unique_id_base); + serialnr->low = serialnr->low << 8; + serialnr->low |= (tmp & 0xff); + } +} +#endif |