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dm: rpmb: Support RPMB mode config from launch.sh

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physical RPMB is accessed if "phisycal_rpmb" is specified
in launch.sh.
Also it reserves some RPMB area with a fixed size(32KB) for
AttKB and future usage, which is RO for UOS.

Tracked-On: #1544
Signed-off-by: Huang, Yang <yang.huang@intel.com>
Acked-by: Zhu Bing <bing.zhu@intel.com>
This commit is contained in:
Huang, Yang
2018-10-18 12:33:14 +08:00
committed by Xie, Nanlin
parent 107eaa3ab0
commit bd97e5cbe2
2 changed files with 13 additions and 18 deletions
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15
devicemodel/hw/platform/rpmb/rpmb_backend.c
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@@ -64,15 +64,16 @@ static uint16_t get_rpmb_blocks(void)
return rpmb_get_blocks();
}
//TODO: hardcode keybox size. It will be read from keybox header from RPMB.
/* Common area of RPMB refers to the start area of RPMB
* shared among all UOS with RO access.
* It's predefined to 32KB in size which contains:
* AttKB(up to 16KB), RPMB info header (256B)
* and the remaining size for future uasge.
*/
static uint16_t get_common_blocks(void)
{
uint16_t kb_blocks;
uint32_t kb_size = 15872;
kb_blocks = (kb_size + (RPMB_BLOCK_SIZE -1)) / RPMB_BLOCK_SIZE;
//reserve for simulated rpmb + KBox header + padding
return kb_blocks + 1 + 1 + 1;
uint16_t common_size = 32 * 1024;
return common_size / RPMB_BLOCK_SIZE;
}
static uint16_t get_accessible_blocks(void)