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quark se arc: irq static initialization support.

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Adds static irq support for the Quark SE platform for the ARC core.

New linker sections and sw isr table initialization is needed to support
static IRQ.

Change-Id: I82af98a189f5a156e7f1018f3ecdbfa73ad3e6ef
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
This commit is contained in:
Juan Manuel Cruz 2015-11-24 17:17:43 -06:00 • committed by Anas Nashif
commit b51b3da133
3 changed files with 77 additions and 46 deletions
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13
include/arch/arc/v2/linker.cmd
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@ -123,6 +123,19 @@ SECTIONS {
__data_ram_start = .;
*(.data)
*(".data.*")
KEEP(*(.isr_irq*))
/*The following sections maps the location of the different rows for
the _sw_isr_table. Each row maps to an IRQ entry (handler, argument).*/
/*In ARC architecture, IRQ 0-15 are reserved for the system and are not
assignable by the user, for that reason the linker sections start
on IRQ 16*/
/* sections for IRQ16-19 */
KEEP(*(SORT(.gnu.linkonce.isr_irq[1][6-9])))
/* sections for IRQ20-99 */
KEEP(*(SORT(.gnu.linkonce.isr_irq[2-9][0-9])))
/* sections for IRQ100-999 */
KEEP(*(SORT(.gnu.linkonce.isr_irq[1-9][0-9][0-9])))
} GROUP_LINK_IN(RAMABLE_REGION)
SECTION_PROLOGUE(initlevel, (OPTIONAL),)