Increase type widths to satisfy width requirements
Usually, C has no problem up-converting types to larger bit sizes. MISRA
rule 10.7 requires that you not do this, or be very explicit about this.
This resolves the following required rule:
bl1/aarch64/bl1_context_mgmt.c:81:[MISRA C-2012 Rule 10.7 (required)]<None>
The width of the composite expression "0U | ((mode & 3U) << 2U) | 1U |
0x3c0U" (32 bits) is less that the right hand operand
"18446744073709547519ULL" (64 bits).
This also resolves MISRA defects such as:
bl2/aarch64/bl2arch_setup.c:18:[MISRA C-2012 Rule 12.2 (required)]
In the expression "3U << 20", shifting more than 7 bits, the number
of bits in the essential type of the left expression, "3U", is
not allowed.
Further, MISRA requires that all shifts don't overflow. The definition of
PAGE_SIZE was (1U << 12), and 1U is 8 bits. This caused about 50 issues.
This fixes the violation by changing the definition to 1UL << 12. Since
this uses 32bits, it should not create any issues for aarch32.
This patch also contains a fix for a build failure in the sun50i_a64
platform. Specifically, these misra fixes removed a single and
instruction,
92407e73 and x19, x19, #0xffffffff
from the cm_setup_context function caused a relocation in
psci_cpus_on_start to require a linker-generated stub. This increased the
size of the .text section and caused an alignment later on to go over a
page boundary and round up to the end of RAM before placing the .data
section. This sectionn is of non-zero size and therefore causes a link
error.
The fix included in this reorders the functions during link time
without changing their ording with respect to alignment.
Change-Id: I76b4b662c3d262296728a8b9aab7a33b02087f16
Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
diff --git a/lib/psci/psci_common.c b/lib/psci/psci_common.c
index 6d81377..9f8a08a 100644
--- a/lib/psci/psci_common.c
+++ b/lib/psci/psci_common.c
@@ -663,7 +663,8 @@
mode = ((ns_scr_el3 & SCR_HCE_BIT) != 0U) ? MODE_EL2 : MODE_EL1;
- ep->spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
+ ep->spsr = SPSR_64((uint64_t)mode, MODE_SP_ELX,
+ DISABLE_ALL_EXCEPTIONS);
} else {
mode = ((ns_scr_el3 & SCR_HCE_BIT) != 0U) ?
@@ -675,7 +676,8 @@
*/
daif = DAIF_ABT_BIT | DAIF_IRQ_BIT | DAIF_FIQ_BIT;
- ep->spsr = SPSR_MODE32(mode, entrypoint & 0x1, ee, daif);
+ ep->spsr = SPSR_MODE32((uint64_t)mode, entrypoint & 0x1, ee,
+ daif);
}
return PSCI_E_SUCCESS;