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soc: rockchip: tb_service: add memory-no-free property support

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Some product scenarios would like the rtos's memory space always been
exclusive.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Change-Id: Ib71da6b355995ab5b12ddfdf346bbce8e1852745
This commit is contained in:
Ziyuan Xu
2023-10-26 16:58:24 +08:00
committed by Tao Huang
parent 2c17810b09
commit ef83daca54
1 changed files with 5 additions and 1 deletions
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6
drivers/soc/rockchip/rockchip_thunderboot_service.c
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@@ -24,6 +24,7 @@ struct rk_tb_serv {
struct reset_control *rsts;
phys_addr_t mem_start;
size_t mem_size;
bool mem_no_free;
};
static atomic_t mcu_done = ATOMIC_INIT(0);
@@ -89,7 +90,8 @@ static void do_mcu_done(struct rk_tb_serv *serv)
start = phys_to_virt(serv->mem_start);
end = start + serv->mem_size;
free_reserved_area(start, end, -1, "rtos");
if (!serv->mem_no_free)
free_reserved_area(start, end, -1, "rtos");
spin_lock(&lock);
if (atomic_read(&mcu_done)) {
@@ -150,6 +152,8 @@ static int rk_tb_serv_probe(struct platform_device *pdev)
if (IS_ERR(serv->rsts) && PTR_ERR(serv->rsts) == -EPROBE_DEFER)
return -EPROBE_DEFER;
serv->mem_no_free = device_property_read_bool(&pdev->dev, "memory-no-free");
platform_set_drvdata(pdev, serv);
mbox_cl = &serv->mbox_cl;